| Date | Constituency | c/u | Former Incumbent | Winner | Cause |
| 4 December 1761 | Bramber | u(*) | Andrew Archer | The Lord Winterton | Chose to sit for Coventry |
| 4 December 1761 | Eye | u | Henry Cornwallis | Henry Townshend | Death |
| 4 December 1761 | Ilchester | u | The Earl of Egmont | William Wilson | Chose to sit for Bridgwater |
| 4 December 1761 | New Shoreham | u | Sir William Peere Williams | The Lord Pollington | Death |
| 4 December 1761 | Winchelsea | u* | The Earl of Thomond | Thomas Sewell | Cofferer of the Household |
| 5 December 1761 | Gatton | u | Sir James Colebrooke | Edward Harvey | Death |
| 5 December 1761 | Harwich | u* | John Roberts | John Roberts | Lord of Trade |
| 5 December 1761 | Chipping Wycombe | u* | Viscount FitzMaurice | Isaac Barré | Succeeded to a peerage |
| 7 December 1761 | Durham City | c(*) | Henry Lambton | Ralph Gowland | Death |
| Ralph Gowland | John Lambton | By-election results reversed on petition 11 May 1762 |
| 7 December 1761 | Fowey | u | George Edgcumbe | Robert Walsingham | Succeeded to a peerage |
| 7 December 1761 | Minehead | u | The Earl of Thomond | The Earl of Thomond | Cofferer of the Household |
| 7 December 1761 | Newport | u* | John Lee | William de Grey | Death |
| 8 December 1761 | East Grinstead | u | Lord George Sackville | Sir Thomas Hales | Chose to sit for Hythe |
| 8 December 1761 | Plympton Erle | u | George Treby | George Hele Treby | Death |
| 10 December 1761 | Derbyshire | u* | Lord George Cavendish | Lord George Cavendish | Comptroller of the Household |
| 10 December 1761 | Dunbartonshire | u* | John Campbell | Archibald Edmonstone | Became a Scottish Peer |
| 11 December 1761 | Malton | u* | Henry Finch | Savile Finch | Death |
| 17 December 1761 | Old Sarum | u* | Thomas Pitt | Thomas Pitt | Death |
| 18 December 1761 | Clitheroe | u* | Thomas Lister | Nathaniel Lister | Death |
| 28 December 1761 | Ayr Burghs | u | Lord Frederick Campbell | Alexander Wedderburn | Chose to sit for Glasgow Burghs |
| 28 December 1761 | Cumberland | u | Sir James Lowther | Sir Wilfrid Lawson | Chose to sit for Westmorland |
| 1 February 1762 | Downton | u | Charles Pratt | Thomas Pym Hales | Resignation (Chief Justice of the Common Pleas) |
| 1 February 1762 | Reigate | u* | Charles Yorke | Charles Yorke | Attorney General for England and Wales |
| 1 February 1762 | Wigan | u* | Fletcher Norton | Sir Fletcher Norton | Solicitor General for England and Wales |
| 19 February 1762 | Wigtown Burghs | u | Archibald Montgomerie | Keith Stewart | Chose to sit for Ayrshire |
| 24 February 1762 | Hampshire | u* | Sir Simeon Stuart | Sir Simeon Stuart | Chamberlain of the Exchequer |
| 27 February 1762 | Edinburgh | u | George Lind | James Coutts | Resignation (Conservator of Scottish Privileges in the Netherlands) |
| 18 March 1762 | Wigtownshire | u | John Hamilton | James Murray | Resignation to contest Wigtown Burghs |
| 20 March 1762 | Rye | u* | Phillips Gybbon | John Norris | Death |
| 24 March 1762 | Taunton | u | The Earl of Tyrconnell | Laurence Sulivan | Death |
| 25 March 1762 | Leicestershire | u* | Edward Smith | Sir Thomas Cave | Death |
| 7 April 1762 | Newport (I.o.W.) | u | Charles Holmes | William Rawlinson Earle | Death |
| 15 April 1762 | Wigtown Burghs | u | Keith Stewart | John Hamilton | Resignation |
| 27 April 1762 | Westminster | u* | Edward Cornwallis | Edwin Sandys | Resignation (Governor of Gibraltar) |
| 4 May 1762 | Bramber | u | William Fitzherbert | George Venables Vernon | Resignation to contest Derby |
| 5 May 1762 | Bridgwater | u* | The Earl of Egmont | Viscount Perceval | Became a British Peer |
| 5 May 1762 | Derby | u* | George Venables Vernon | William Fitzherbert | Elevated to the peerage |
| 7 May 1762 | Dorchester | u* | The Lord Milton | John Damer | Became a British Peer |
| 11 May 1762 | Marlborough | u* | Lord Brudenell | James Long | Elevated to the peerage |
| 14 May 1762 | Tiverton | u | Sir Edward Hussey Montagu | Charles Gore | Elevated to the peerage |
| 19 May 1762 | Devon | u* | Sir William Courtenay | John Parker | Elevated to the peerage |
| 24 May 1762 | Bodmin | u | John Parker | Sir Christopher Treise | Resignation to contest Devon |
| 28 May 1762 | East Looe | u* | Francis Gashry | The Viscount Palmerston | Death |
| 3 June 1762 | Buteshire | u | James Stuart | Henry Wauchope | Death |
| 5 June 1762 | Huntingdonshire | u | Viscount Mandeville | Lord Charles Greville Montagu | Succeeded to a peerage |
| 7 June 1762 | Buckingham | u* | George Grenville | George Grenville | Northern Secretary |
| 9 June 1762 | King's Lynn | u* | Sir John Turner | Sir John Turner | Junior Lord of the Treasury |
| 9 June 1762 | Weymouth and Melcombe Regis | u | Sir Francis Dashwood | Sir Francis Dashwood | Chancellor of the Exchequer |
| 11 June 1762 | Plymouth | u* | The Viscount Barrington | The Viscount Barrington | Treasurer of the Navy |
| 12 June 1762 | Weobley | u | Marquess of Titchfield | William Lynch | Succeeded to a peerage |
| 17 June 1762 | Selkirkshire | u | Gilbert Elliot | Gilbert Elliot | Treasurer of the Chamber |
| 30 June 1762 | Cockermouth | u | Charles Jenkinson | Charles Jenkinson | Treasurer of the Ordnance |
| 30 November 1762 | Buckingham | u* | George Grenville | George Grenville | First Lord of the Admiralty |
| 30 November 1762 | Dunwich | u | Henry Fox | Henry Fox | Clerk of the Pells in Ireland |
| 30 November 1762 | East Grinstead | u* | Sir Thomas Hales | John Irwin | Death |
| 1 December 1762 | Eye | u | Henry Townshend | Richard Burton | Death |
| u* | Viscount Brome | The Viscount Allen | Succeeded to a peerage |
| 1 December 1762 | Lyme Regis | u* | Thomas Fane | Lord Burghersh | Succeeded to a peerage |
| 1 December 1762 | Weymouth and Melcombe Regis | u | The Lord Waltham | Richard Jackson | Death |
| 3 December 1762 | Great Grimsby | u | Henry Knight | The Lord Luxborough | Death |
| 6 December 1762 | Corfe Castle | u | Henry Bankes | John Campbell | Resignation (Commissioner of Customs) |
| 13 December 1762 | Nottinghamshire | u* | Lord Robert Manners Sutton | Thomas Willoughby | Death |
| 13 December 1762 | Warwick | u | Viscount Dungarvan | Paul Methuen | Succeeded to a peerage |
| 15 December 1762 | Abingdon | u* | John Morton | John Morton | Chief Justice of Chester |
| 16 December 1762 | Oxford University | u | Peregrine Palmer | Sir Walter Wagstaffe Bagot | Death |
| 21 December 1762 | Lancashire | u* | Lord Strange | Lord Strange | Chancellor of the Duchy of Lancaster |
| 22 December 1762 | Aylesbury | u | Welbore Ellis | Welbore Ellis | Secretary at War |
| 23 December 1762 | Tavistock | u* | Richard Rigby | Richard Rigby | Vice-Treasurer of Ireland |
| 27 December 1762 | Bewdley | u(*) | Sir Edward Winnington | Sir Edward Winnington | Storekeeper of the Ordnance |
| 27 December 1762 | Cumberland | u* | Sir Wilfrid Lawson | Sir James Lowther | Death |
| 27 December 1762 | Ipswich | u | The Lord Orwell | The Lord Orwell | Lord of Trade |
| 27 December 1762 | Newcastle-under-Lyme | u | Henry Vernon | Sir Lawrence Dundas | Death |
| 27 December 1762 | Weobley | u* | Henry Frederick Thynne | Henry Frederick Thynne | Third Clerk Comptroller of the Green Cloth |
| 28 December 1762 | Christchurch | u* | James Harris | James Harris | Lord of the Admiralty |
| 28 December 1762 | Yarmouth | u* | Henry Holmes | Jeremiah Dyson | Death |
| 29 December 1762 | Calne | u* | Daniel Bull | Thomas FitzMaurice | Resignation (Commissioner of Taxes) |
| 1 January 1763 | Huntingdonshire | u | The Lord Carysfort | The Lord Carysfort | Lord of the Admiralty |
| 3 January 1763 | Launceston | u* | Humphry Morice | Humphry Morice | Comptroller of the Household |
| 7 January 1763 | Fifeshire | u | James St Clair | James Wemyss | Death |
| 12 January 1763 | Oxfordshire | u* | Lord Charles Spencer | Lord Charles Spencer | Out-Ranger of Windsor Forest and Surveyor of Gardens and Waters |
| 3 February 1763 | Knaresborough | u* | Sir Henry Slingsby | Sir Anthony Thomas Abdy | Death |
| 21 February 1763 | Lewes | u | Sir Francis Poole | William Plumer | Death |
| 24 February 1763 | Bury St Edmunds | u | Augustus John Hervey | William Hervey | Resignation |
| 1 March 1763 | Harwich | u* | Charles Townshend | Charles Townshend | First Lord of Trade |
| 3 March 1763 | Westmorland | u | Sir James Lowther | Robert Lowther | Resignation to contest Cumberland |
| 15 March 1763 | Westminster | u* | Viscount Pulteney | Lord Warkworth | Death |
| 16 March 1763 | Richmond | u | Earl of Ancram | Thomas Dundas | Resignation |
| 7 April 1763 | Totnes | u | Browse Trist | Henry Seymour | Resignation |
| 21 April 1763 | Yarmouth | u | The Lord Holmes | The Lord Holmes | Governor of the Isle of Wight |
| 23 April 1763 | Christchurch | u* | James Harris | James Harris | Junior Lord of the Treasury |
| 23 April 1763 | Wells | u | The Lord Digby | The Lord Digby | Lord of the Admiralty |
| 23 April 1763 | Winchelsea | u* | Thomas Orby Hunter | Thomas Orby Hunter | Junior Lord of the Treasury |
| 25 April 1763 | Buckingham | u* | George Grenville | George Grenville | First Lord of the Treasury and Chancellor of the Exchequer |
| 26 April 1763 | Maldon | c* | Bamber Gascoyne | John Huske | Lord of Trade |
| 26 April 1763 | Old Sarum | u | Thomas Pitt | Thomas Pitt | Lord of the Admiralty |
| 27 April 1763 | Gloucestershire | u* | Norborne Berkeley | Thomas Tracy | Resignation |
| 27 April 1763 | Pontefract | u | William Gerard Hamilton | William Gerard Hamilton | Chancellor of the Exchequer of Ireland |
| 28 April 1763 | Bath | c* | The Viscount Ligonier | Sir John Sebright | Resignation |
| 28 April 1763 | Dartmouth | u* | The Viscount Howe | The Viscount Howe | Naval Lord |
| 28 April 1763 | St Ives | u | Charles Hotham | Charles Hotham | Groom of the Bedchamber |
| 29 April 1763 | Dunwich | u | Henry Fox | Sir Jacob Garrard Downing | Elevated to the peerage |
| 30 April 1763 | Weymouth and Melcombe Regis | u | Sir Francis Dashwood | Charles Walcott | Succeeded to a peerage |
| 4 May 1763 | Oxfordshire | u* | Lord Charles Spencer | Lord Charles Spencer | Comptroller of the Household |
| 6 May 1763 | Kirkcudbright Stewartry | u | John Ross Mackye | John Ross Mackye | Treasurer of the Ordnance |
| 11 May 1763 | Glamorganshire | u | Sir Edmond Thomas | Sir Edmond Thomas | Surveyor-General of Woods North and South of Trent |
| 12 May 1763 | Ross-shire | u* | James Stuart Mackenzie | James Stuart Mackenzie | Keeper of the Privy Seal of Scotland |
| 18 May 1763 | Dysart Burghs | u | James Oswald | James Oswald | Vice-Treasurer of Ireland |
| 21 November 1763 | Bridgwater | u* | Edward Southwell | The Lord Coleraine | Resignation to contest Gloucestershire |
| 21 November 1763 | Northampton | u | Spencer Compton | Lucy Knightly | Succeeded to a peerage |
| 22 November 1763 | Honiton | c* | Henry Reginald Courtenay | Sir George Yonge | Death |
| 22 November 1763 | Horsham | u* | Charles Ingram | Robert Pratt | Became a Scottish Peer |
| 22 November 1763 | Milborne Port | u* | Thomas Medlycott | Thomas Hutchings Medlycott | Death |
| 22 November 1763 | Newcastle-under-Lyme | u | John Waldegrave | Thomas Gilbert | Succeeded to a peerage |
| 22 November 1763 | Tavistock | u* | Richard Neville Neville | Richard Neville Neville | Paymaster of Pensions |
| 23 November 1763 | Gloucestershire | u* | Thomas Chester | Edward Southwell | Death |
| 24 November 1763 | Bishop's Castle | c* | Francis Child | George Clive | Death |
| 25 November 1763 | Plympton Erle | u* | George Hele Treby | Paul Henry Ourry | Death |
| 30 November 1763 | Kent | u* | Sir Wyndham Knatchbull Wyndham | Sir Brook Bridges | Death |
| 1 December 1763 | Saltash | u | John Clevland | Augustus John Hervey | Death |
| 5 December 1763 | Brecon | u* | Thomas Morgan | Charles Morgan | Resignation to contest Monmouthshire |
| 13 December 1763 | Essex | c* | William Harvey | John Luther | Death |
| 15 December 1763 | Monmouthshire | u* | William Morgan | Thomas Morgan | Death |
| 24 December 1763 | West Looe | u | Francis Buller | Francis Buller | Groom Porter |
| 24 December 1763 | Wigan | c | Sir Fletcher Norton | Sir Fletcher Norton | Attorney General for England and Wales |
| 27 December 1763 | Newport (Cornwall) | u* | William de Grey | William de Grey | Solicitor General for England and Wales |
| 29 December 1763 | Stirlingshire | u | James Campbell | James Campbell | Governor of Stirling Castle |
| 5 January 1764 | Westmorland | u* | Robert Lowther | John Robinson | Resignation |
| 17 January 1764 | Argyllshire | u | Dugald Campbell | Lord William Campbell | Resignation (Master of the Revels in Scotland) |
| 23 January 1764 | Hereford | c* | John Symons | John Scudamore | Death |
| 25 January 1764 | Aylesbury | c* | John Wilkes | Welbore Anthony Bacon | Expulsion |
| 9 February 1764 | Steyning | u | Frazer Honywood | Richard Fuller | Death |
| 18 February 1764 | Dunwich | u* | Sir Jacob Garrard Downing | Miles Barne | Death |
| 22 March 1764 | Cambridgeshire | u* | Viscount Royston | Sir John Hynde Cotton | Succeeded to a peerage |
| 23 March 1764 | Perthshire | c* | John Murray | David Graeme | Became a Scottish Peer |
| 23 March 1764 | Rochester | u | Viscount Parker | Sir Charles Hardy | Succeeded to a peerage |
| 2 April 1764 | Corfe Castle | u* | Viscount Malpas | John Bond | Death |
| 11 April 1764 | Norfolk | u* | George Townshend | Thomas de Grey | Succeeded to a peerage |
| 23 April 1764 | Cambridge | u* | Charles Sloane Cadogan | Charles Sloane Cadogan | Surveyor of Gardens and Waters |
| 24 April 1764 | Bedford | u* | Richard Vernon | Richard Vernon | Third Clerk Comptroller of the Green Cloth |
| 24 April 1764 | Yarmouth | u | Jeremiah Dyson | Jeremiah Dyson | Lord of Trade |
| 15 January 1765 | Devizes | c* | John Garth | Charles Garth | Death |
| 15 January 1765 | Southampton | u* | Hans Stanley | Hans Stanley | Governor of the Isle of Wight |
| 15 January 1765 | Wallingford | u | John Hervey | Sir George Pigot | Death |
| 15 January 1765 | Winchelsea | u* | Sir Thomas Sewell | Sir Thomas Sewell | Master of the Rolls |
| 16 January 1765 | Midhurst | u | William Hamilton | Bamber Gascoyne | Resignation |
| 17 January 1765 | Brackley | u* | Robert Wood | Robert Wood | Groom Porter |
| 18 January 1765 | Berwick-upon-Tweed | u* | John Crauford | Sir John Delaval | Death |
| 18 January 1765 | Wilton | u* | Nicholas Herbert | Nicholas Herbert | Secretary of Jamaica |
| 18 January 1765 | Yarmouth | u | The Lord Holmes | John Eames | Death |
| 19 January 1765 | Bossiney | u | John Richmond Webb | John Richmond Webb | Judge of the Brecon Circuit |
| 19 January 1765 | Dover | u | Edward Simpson | Marquess of Lorne | Death |
| 19 January 1765 | West Looe | c | Francis Buller | John Sargent | Death |
| 21 January 1765 | Fowey | c* | Jonathan Rashleigh | Philip Rashleigh | Death |
| 21 January 1765 | Stamford | u* | John Chaplin | George René Aufrère | Death |
| 4 February 1765 | Bridport | u | Sir Gerard Napier | Benjamin Way | Death |
| 6 February 1765 | Hampshire | u | Henry Bilson Legge | Sir Richard Mill | Death |
| 6 February 1765 | Salisbury | c | Julines Beckford | Samuel Eyre | Death |
| 6 February 1765 | Warwickshire | u | William Craven | William Throckmorton Bromley | Succeeded to a peerage |
| 12 February 1765 | Pembrokeshire | c* | Sir John Philipps | Sir Richard Philipps | Death |
| 15 February 1765 | Brackley | u* | Marshe Dickinson | Viscount Hinchingbrooke | Death |
| 4 March 1765 | Stafford | c | William Richard Chetwynd | John Crewe | Death |
| 26 April 1765 | Ilchester | c* | Joseph Tolson Lockyer | Peter Legh | Death |
| 15 May 1765 | Cornwall | u* | James Buller | Sir John Molesworth | Death |
| 30 May 1765 | Poole | c | Joseph Gulston | Joseph Gulston | Resignation |
| 3 June 1765 | Devizes | u* | William Willy | James Sutton | Death |
| 3 June 1765 | Harwich | u* | Charles Townshend | Charles Townshend | Paymaster of the Forces |
| 5 June 1765 | Anstruther Burghs | u | Sir Henry Erskine | Sir Henry Erskine | Secretary to the Order of the Thistle |
| 7 June 1765 | Kincardineshire | u | Sir James Carnegie | Sir Alexander Ramsay Irvine | Death |
| 11 June 1765 | St Germans | u | Philip Stanhope | William Hussey | Resignation |
| 13 June 1765 | Selkirkshire | u | Gilbert Elliot | John Pringle | Resignation to contest Roxburghshire |
| 20 June 1765 | Roxburghshire | u* | Walter Scott | Gilbert Elliot | Resignation (Receiver and Cashier of Excise in Scotland) |
| 24 June 1765 | Glasgow Burghs | u* | Lord Frederick Campbell | Lord Frederick Campbell | Keeper of the Privy Seal of Scotland |
| 17 November 1765 | Hythe | u | William Glanville | William Amherst | Death |
| 23 December 1765 | Dorchester | u* | Thomas Foster | William Ewer | Death |
| 23 December 1765 | Harwich | u* | John Roberts | John Roberts | Lord of Trade |
| 23 December 1765 | Leicester | u | James Wigley | Anthony James Keck | Death |
| 23 December 1765 | Reigate | u* | Charles Yorke | Charles Yorke | Attorney General for England and Wales |
| 23 December 1765 | Rochester | c | Isaac Townsend | Grey Cooper | Death |
| 23 December 1765 | Seaford | u* | The Viscount Gage | The Viscount Gage | Paymaster of Pensions |
| 23 December 1765 | New Shoreham | u* | The Viscount Midleton | Samuel Cornish | Death |
| 23 December 1765 | Southwark | u* | Alexander Hume | Henry Thrale | Death |
| 23 December 1765 | Tamworth | u* | Viscount Villiers | Edward Thurlow | Vice-Chamberlain of the Household |
| 23 December 1765 | Thetford | u* | Henry Seymour Conway | Henry Seymour Conway | Southern Secretary |
| 23 December 1765 | Wendover | u* | Verney Lovett | Edmund Burke | Resignation |
| 23 December 1765 | Whitchurch | u* | Thomas Townshend | Thomas Townshend | Junior Lord of the Treasury |
| 23 December 1765 | New Windsor | u* | Augustus Keppel | Augustus Keppel | Naval Lord |
| 23 December 1765 | Great Yarmouth | u* | Charles Townshend | Charles Townshend | Lord of the Admiralty |
| 24 December 1765 | Berwick-upon-Tweed | u | Thomas Watson | Wilmot Vaughan | Resignation (Steward of the Manor of Shippon, Berkshire) |
| 24 December 1765 | Winchester | u* | Lord Harry Powlett | George Paulet | Succeeded to a peerage |
| 26 December 1765 | Dartmouth | u* | The Viscount Howe | The Viscount Howe | Treasurer of the Navy |
| 26 December 1765 | Derby | u* | William Fitzherbert | William Fitzherbert | Lord of Trade |
| 26 December 1765 | Hedon | u* | Sir Charles Saunders | Sir Charles Saunders | Naval Lord |
| 26 December 1765 | Hythe | u | Lord George Sackville | Lord George Sackville | Vice-Treasurer of Ireland |
| 26 December 1765 | Leicestershire | u* | Sir Thomas Palmer | Sir John Palmer | Death |
| 26 December 1765 | Liverpool | u* | Sir William Meredith | Sir William Meredith | Lord of the Admiralty |
| 26 December 1765 | Newport (I.o.W.) | u | Thomas Lee Dummer | Thomas Dummer | Death |
| 26 December 1765 | Plymouth | u* | The Viscount Barrington | The Viscount Barrington | Secretary at War |
| 26 December 1765 | Pontefract | u* | The Viscount Galway | The Viscount Galway | Master of the Staghounds |
| 26 December 1765 | Stamford | u* | George Bridges Brudenell | George Bridges Brudenell | Second Clerk Comptroller of the Green Cloth |
| 26 December 1765 | Sussex | u* | Thomas Pelham | Thomas Pelham | Comptroller of the Household |
| 26 December 1765 | Thirsk | u | Henry Grenville | James Grenville | Resignation (Commissioner of Customs) |
| 26 December 1765 | Wells | c(*) | The Lord Digby | Robert Child | Became a British Peer (Two Returns Made) |
| Peter Taylor |
| Robert Child | Robert Child | Child Declared elected 15 January 1766 |
| Peter Taylor |
| 27 December 1765 | Aldborough | u(*) | Andrew Wilkinson | Viscount Villiers | Resignation (Storekeeper of the Ordnance) |
| 27 December 1765 | East Looe | u* | The Viscount Palmerston | The Viscount Palmerston | Lord of Trade |
| John Buller | John Buller | Lord of the Admiralty |
| 27 December 1765 | Guildford | u* | George Onslow | George Onslow | Out-Ranger of Windsor Forest |
| 28 December 1765 | Higham Ferrers | u | John Yorke | John Yorke | Lord of Trade |
| 28 December 1765 | Huntingdonshire | u | Lord Charles Greville Montagu | Robert Bernard | Resignation (Governor of South Carolina) |
| 30 December 1765 | East Grinstead | u | Earl of Middlesex | Sir Charles Farnaby | Succeeded to a peerage |
| 30 December 1765 | Knaresborough | u* | Sir Anthony Thomas Abdy | Sir Anthony Thomas Abdy | King's Counsel |
| u | Lord John Cavendish | Lord John Cavendish | Junior Lord of the Treasury |
| 2 January 1766 | Cardiff Boroughs | u* | Herbert Mackworth | Herbert Mackworth | Death |
| 2 January 1766 | Edinburghshire | u* | Sir Alexander Gilmour | Sir Alexander Gilmour | Third Clerk Comptroller of the Green Cloth |
| 8 January 1766 | Surrey | u* | George Onslow | George Onslow | Junior Lord of the Treasury |
| 8 January 1766 | Worcestershire | u* | William Dowdeswell | William Dowdeswell | Chancellor of the Exchequer |
| 9 January 1766 | Monmouthshire | u* | Capel Hanbury | John Hanbury | Death |
| 17 January 1766 | Anstruther Burghs | c* | Sir Henry Erskine | Sir John Anstruther | Death |
| 17 January 1766 | Perth Burghs | u | George Dempster | George Dempster | Secretary to the Order of the Thistle |
| 24 January 1766 | Bossiney | u* | John Richmond Webb | Lord Mount Stuart | Death |
| 27 January 1766 | Leicester | u | George Wrighte | John Darker | Death |
| 4 February 1766 | Helston | u | Francis Godolphin | William Windham | Succeeded to a peerage |
| 7 February 1766 | Dartmouth | u* | John Jeffreys | Richard Hopkins | Death |
| 15 March 1766 | Kingston-upon-Hull | u* | Sir George Montgomery Metham | William Weddell | Resignation (Clerk of the Wardrobe) |
| 1 April 1766 | Bridgnorth | u* | William Whitmore | William Whitmore | Warden of the Mint |
| 2 April 1766 | Berkshire | u* | Henry Pye | Thomas Craven | Death |
| 4 April 1766 | Lostwithiel | u | George Howard | Viscount Beauchamp | Resignation (Governor of Minorca) |
| 22 April 1766 | Calne | u | Thomas Duckett | John Calcraft | Death |
| 8 May 1766 | Shropshire | u* | Richard Lyster | Charles Baldwyn | Death |
| 28 May 1766 | Dumfries Burghs | u | Thomas Miller | James Montgomery | Resignation (Lord Justice Clerk) |
| 16 June 1766 | Great Bedwyn | u | William Woodley | William Burke | Resignation pending appointment as Governor of the Leeward Islands |
| 17 November 1766 | Banbury | u* | Lord North | Lord North | Joint Paymaster of the Forces |
| 17 November 1766 | Coventry | u* | James Hewitt | Henry Seymour Conway | Resignation (Puisne Justice of the King's Bench) |
| 17 November 1766 | Harwich | u | Charles Townshend | Charles Townshend | Chancellor of the Exchequer |
| 17 November 1766 | Honiton | u* | Sir George Yonge | Sir George Yonge | Lord of the Admiralty |
| 18 November 1766 | Buckingham | u | James Grenville | James Grenville | Vice-Treasurer of Ireland |
| 18 November 1766 | Christchurch | u* | Thomas Robinson | Thomas Robinson | Lord of Trade |
| 18 November 1766 | Newport (Cornwall) | u* | William de Grey | William de Grey | Attorney General for England and Wales |
| 18 November 1766 | Chipping Wycombe | u* | Isaac Barré | Isaac Barré | Vice-Treasurer of Ireland |
| 19 November 1766 | Barnstaple | u* | Sir George Amyand | John Clevland | Death |
| 19 November 1766 | Bath | c* | William Pitt | John Smith | Elevation to the peerage |
| 19 November 1766 | Penryn | u* | Sir Edward Turner | Francis Basset | Death |
| 19 November 1766 | Scarborough | u* | William Osbaldeston | Fountayne Wentworth Osbaldeston | Death |
| 20 November 1766 | East Looe | u | The Viscount Palmerston | The Viscount Palmerston | Lord of the Admiralty |
| 25 November 1766 | East Retford | u | John Shelley | John Shelley | Treasurer of the Household |
| 27 November 1766 | Middlesex | u* | George Cooke | George Cooke | Joint Paymaster of the Forces |
| 4 December 1766 | Nairnshire | u | Pryse Campbell | Pryse Campbell | Junior Lord of the Treasury |
| 5 December 1766 | Ross-shire | u* | James Stuart Mackenzie | James Stuart Mackenzie | Keeper of the Privy Seal of Scotland |
| 9 December 1766 | Queenborough | u* | Sir Peircy Brett | Sir Peircy Brett | Naval Lord |
| 10 December 1766 | Portsmouth | u* | Sir Edward Hawke | Sir Edward Hawke | First Lord of the Admiralty |
| 12 December 1766 | Argyllshire | u* | Lord William Campbell | Robert Campbell | Resignation (Governor of Nova Scotia) |
| 15 December 1766 | Southampton | u* | Hans Stanley | Hans Stanley | Cofferer of the Household |
| 16 December 1766 | Bristol | u* | Robert Nugent | Robert Nugent | First Lord of Trade |
| 22 December 1766 | Boston | u* | John Michell | Charles Amcotts | Death |
| 23 December 1766 | Dover | u | Marquess of Lorne | John Bindley | Elevated to the peerage |
| 23 December 1766 | Lewes | u | Thomas Sergison | Lord Edward Bentinck | Death |
| 9 January 1767 | Aberdeen Burghs | u | David Scott | Sir John Lindsay | Death |
| 9 January 1767 | Cockermouth | u | Charles Jenkinson | John Elliot | Lord of the Admiralty |
| 20 January 1767 | Appleby | u* | John Stanwix | Charles Jenkinson | Death |
| 26 January 1767 | Chichester | u* | Lord George Henry Lennox | William Keppel | Resignation to contest Sussex |
| 28 January 1767 | Somerset | u | Thomas Prowse | Sir Thomas Dyke Acland | Death |
| 3 February 1767 | Sussex | u* | John Butler | Lord George Henry Lennox | Death |
| 4 February 1767 | Tregony | u* | William Trevanion | Thomas Pownall | Death |
| 5 February 1767 | Roxburghshire | u* | Sir Gilbert Elliot | Gilbert Elliot | Keeper of the Signet |
| 12 February 1767 | Steyning | u* | John Thomlinson | Sir John Filmer | Death |
| 11 March 1767 | Preston | u* | Nicholas Fazakerley | Sir Peter Leicester | Death |
| 21 March 1767 | Leominster | c | Chase Price | Edward Willes | Resignation |
| 24 March 1767 | Wiltshire | u* | Sir Robert Long | Thomas Goddard | Death |
| 7 April 1767 | Bedfordshire | u* | Marquess of Tavistock | The Earl of Upper Ossory | Death |
| 18 May 1767 | Herefordshire | u* | Sir John Morgan | Thomas Foley | Death |
| 8 June 1767 | Boroughbridge | u | Brice Fisher | James West | Death |
| 8 June 1767 | New Woodstock | u* | Anthony Keck | William Gordon | Death |
| 16 June 1767 | Truro | u* | John Boscawen | Edward Hugh Boscawen | Death |
| 1 July 1767 | Helston | u* | Sir John Evelyn | William Evelyn | Death |
| 10 July 1767 | West Looe | u* | Sir William Trelawny | James Townsend | Resignation (Governor of Jamaica) |
| 30 November 1767 | Banbury | u* | Lord North | Lord North | Chancellor of the Exchequer |
| 30 November 1767 | Harwich | u | Charles Townshend | Thomas Bradshaw | Death |
| 1 December 1767 | Dartmouth | u* | Richard Hopkins | Richard Hopkins | Third Clerk Comptroller of the Green Cloth |
| 2 December 1767 | Great Bedwyn | u | Thomas Cotes | Sir Thomas Fludyer | Death |
| 3 December 1767 | Monmouth | u* | Benjamin Bathurst | John Stepney | Death |
| 4 December 1767 | Amersham | u | Benet Garrard | John Affleck | Death |
| 4 December 1767 | Appleby | u* | Charles Jenkinson | Charles Jenkinson | Junior Lord of the Treasury |
| 4 December 1767 | Liverpool | u* | Sir Ellis Cunliffe | Richard Pennant | Death |
| 4 December 1767 | Whitchurch | u* | Thomas Townshend | Thomas Townshend | Joint Paymaster of the Forces |
| 7 December 1767 | Ashburton | u | John Harris | Robert Palk | Death |
| 16 December 1767 | Glamorganshire | u | Sir Edmond Thomas | Richard Turbervill | Death |
| 17 December 1767 | Petersfield | u | Richard Pennant | Richard Croftes | Resignation to contest Liverpool |
| 19 December 1767 | Exeter | u | John Tuckfield | William Spicer | Death |
| 31 December 1767 | Peeblesshire | u | John Dickson | Adam Hay | Death |
| 28 January 1768 | Tavistock | u* | Richard Rigby | Richard Rigby | Vice-Treasurer of Ireland |
| 29 January 1768 | Chippenham | u* | Sir Samuel Fludyer | Sir Thomas Fludyer | Death |
| 6 February 1768 | Leominster | u* | Edward Willes | John Carnac | Resignation (Pusine Justice of the King's Bench) |
| 3 February 1768 | Oxford University | u | Sir Walter Wagstaffe Bagot | Sir William Dolben | Death |
| 22 February 1768 | Tiverton | u | Charles Gore | John Duntze | Death |