| School | Type | Old Boys/Girls | Derivation | Location | Notes |
| Abingdon School | | Old Abingdonians[11] | | | |
| Adams' Grammar School | | Old Novaportans[12] | From the town in which the school is situated – Newport, Shropshire | | |
| Addey and Stanhope School | | Old Addeyans [13] | From the founder of the Addey School, John Addey[14] | London | |
| Aldenham School | | Old Aldenhamians[15] | | | |
| Ampleforth College | | Old Amplefordians[16] | | | |
| Archbishop Tenison's Church of England High School, Croydon | | Old Tenisonians | | | |
| Archbishop Tenison's Church of England School | | Old Tenisonians[17] | Same foundation | | |
| Ardingly College | | Old Ardinians[18] | "Ardinian" refers to Ardingly | | |
| Arnold School | | Old Arnoldians[19][20] | | | |
| Ashville College | | Old Ashvillians[21] | | | |
| Astley Sports College and Community High School | | Old Astleians | | | |
| Bablake School | | Old Wheatleyans | From the school's main benefactor, Thomas Wheatley | | |
| Badminton School | | Old Badmintonians [22] | | | |
| Bancroft's School | | Old Bancroftians[23] | | | |
| Batley Grammar School | | Old Batelians | "Bately" is an alternative spelling of Batley | | |
| Bedales School | | Old Bedalians[24] | | | |
| Bedford School | | Old Bedfordians[25][26] | | | |
| Bedford Modern School | | Old Bedford Modernians[27] | | | |
| Bedlingtonshire Community High School | | Old Bedlingtonians | | | |
| St Bede's College, Manchester | | Old Bedians | | | |
| Bemrose School | | Old Bemrosians | | | Closed 1989 |
| Benenden School | | Benenden Seniors | "Seniors" avoids the term "old girls" | | |
| Berkhamsted School | | Old Berkhamstedians[28] | | | |
| Birkdale School | | Old Birkdalians | | | |
| Birkenhead School | | Old Birkonians | | | |
| Bishop Gore School | | Old Goreans | | | |
| Bishop's Stortford College | | Old Stortfordians[29] | | | |
| Bishop Wordsworth's School | | Old Wordsworthians | | | |
| Bloxham School | | Old Bloxhamists | | | |
| Blundell's School | | Old Blundellians | | | |
| Bolton School | | Old Boltonians | | | |
| Bootham School | | Bootham Old Scholars | | | |
| Bradfield College | | Old Bradfieldians | | | |
| Bradford Grammar School | | Old Bradfordians | | | |
| Brentwood School (Essex) | | Old Brentwoods | | | |
| Bridgnorth Endowed School | | Old Bridgnorthians | | | |
| Brighton College | | Old Brightonians | | | |
| Bristol Cathedral Choir School | | Old Cathedralians | | | |
| Bristol Grammar School | | Old Bristolians | | | - |
| Bromley High School | | Bromley Old Girls | | | |
| Bromsgrove School | | Old Bromsgrovians | | | |
| Bruce Castle School | | Old Brucastrians | Castra is Latin for castle | | Closed 1891 |
| Bryanston School | | Old Bryanstonians | | | |
| Bury Grammar School | | Old Clavians | From the school motto Sanctas Clavis Hic Fores Aperit (c. 1570) | | |
| Buxton College | | Old Buxtonians | | | |
| Calday Grange Grammar School | | Old Caldeians | | | |
| Campbell College | | Old Campbellians | | | |
| Canford School | | Old Canfordians | | | |
| Caterham School | | Old Caterhamians | | | |
| Charterhouse School | | Old Carthusians | From the Carthusian Order, which founded the Charterhouses | | |
| Chatham House Grammar School | | Old Ruymians | From an old name for Thanet | | |
| Cheadle Hulme School | | Old Waconians | From the former name of Warehousemen and Clerks' Orphan Schools (WaCO) | | |
| Cheltenham College | | Old Cheltonians | Cheltenham changed to Chelton- | | |
| Chigwell School | | Old Chigwellians | | | |
| Christ College, Brecon | | Old Breconians | | | |
| Christ's Hospital | | Old Blues | | | |
| Churcher's College | | Old Churcherians | | | |
| City of London School | | Old Citizens | "Citizen" originally referred to one belonging to a city | | |
| City of Oxford School | | City of Oxford School Old Boys | | | |
| Clifton College | | Old Cliftonians | | | |
| Colchester Royal Grammar School | | Old Colcestrians | | | |
| Colfe's School | | Old Colfeians | | | |
| The College of Richard Collyer | | Old Collyerians | | | |
| Cothill House | Prep | Old Cothillians | | | |
| Cranleigh School | | Old Cranleighans | | | |
| Culford School | | Old Culfordians | | | |
| Dauntsey's School | | Old Dauntseians | | | |
| Dean Close School | | Old Decanians | Decanus is Latin for Dean | | |
| Denstone College | | Old Denstonians | | | |
| Derby School | | Old Derbeians | | | Closed 1989 |
| Derby Grammar School | | Adopted name of former school's old boys by permission of Old Derbeian Association | | |
| Diss Grammar School | | Old Dysseans | | | |
| Dollar Academy | | Old Academicals | | | |
| Douai School | | Old Dowegians | From Douai's medieval English name Doway (compare Norwegian) | | |
| Dover College | | Old Dovorians | | | |
| Dover Grammar School for Boys | | Old Pharosians | From Latin pharos, lighthouse, referring to the Roman lighthouses for which Dover was once famous. | | |
| Downe House School | | Downe House Seniors | Avoids term "old girls" | | |
| Down High School | | Old Dunumians | Taken from the schools Latin Motto, "Floreat Dunum" | | |
| Downside School | | Old Gregorians | Founded by Gregorian Order | | |
| Dragon School | | Old Dragons | | | |
| Dulwich College | | Old Alleynians | After the founder (1619) Edward Alleyn | | |
| Durham School | | Old Dunelmians | Dunelm is the Latin signature of the Bishop of Durham | | |
| Eastbourne College | | Old Eastbournians | | | |
| Edinburgh Academy | | Edinburgh Academicals | | | |
| Elizabeth College, Guernsey | | Old Elizabethans | | Guernsey | |
| Ellesmere College | | Old Ellesmerians | | | |
| Eltham College | | Old Elthamians | | | |
| Emanuel School | | Old Emanuels | | | |
| Epsom College | | Old Epsomians | | | |
| Eton College | | Old Etonians | | | |
| Exeter School | | Old Exonians | | | |
| Fairfield Grammar School | | Old Fairfieldians | | | |
| Felsted School | | Old Felstedians | | | |
| Fettes College | | Old Fettesians | | | |
| Forest School (Walthamstow) | | Old Foresters | | | |
| Foster's School | | Old Fosterians | | | |
| Framlingham College | | Old Framlinghamians | | | |
| Frensham Heights School | | Old Frenshamians | | | |
| Friars School, Bangor | | Old Dominicans | Established on a Dominican Friary (1557) | | |
| Furness Academy | | Old Barrovians | "Barrovian" refers to the Barrow of Barrow-in-Furness | | |
| Giggleswick School | | Old Giggleswickians | | | |
| Glenalmond College | | Old Glenalmond | | | |
| Godolphin and Latymer School | | Old Dolphins | Abbreviation of Godolphin | | |
| Gordonstoun | | Old Gordonstounians | | | |
| Gresham's School | | Old Greshamians | | | |
| Haberdashers' Aske's Boys' School | | Old Haberdashers | | | |
| Haileybury and Imperial Service College | | Old Haileyburians | | | |
| Hampton School | | Old Hamptonians | | | |
| Hanley Castle High School | | Old Hancastrians | | | |
| The Harrodian School | | Old Harrodians | | | |
| Harrow School | Ind | Old Harrovians | | | |
| Harrow High School | Comp | Old Gaytonians | After original site in Gayton Road | | |
| Hawtreys | Prep | Old Hawtreysians | | | |
| Headington School, Oxford | | Old Headingtonians | | | |
| Hereford Cathedral School | | Old Herefordians | | | |
| Highgate School | | Old Cholmeleians | After founder Sir Roger Cholmeley | | |
| Hull Grammar School | | Hull Old Grammarians | | | |
| Hulme Grammar School | | Oldham Hulmeians | | | |
| Hurstpierpoint College | | Old Johnians | Formerly St John's College, Hurstpierpoint | | |
| Hymers College | | Old Hymerians | | |
|
| Ibstock Place School | | Old Ibstonians | | |
|
| Ilford County High School | | Old Parkonians | From former name Park Higher Grade School | | |
| Ilkeston Grammar School | | Old Ilkestonians | | | |
| Ipswich School | | Old Ipswichians | | | |
| John Roan School | | Old Roans | | | |
| The Judd School | | Old Juddians | | | |
| Kelly College | | Old Kelleians | | | |
| Kendrick School | | Kendrick Old Girls | | | |
| Kimbolton School | | Old Kimboltians | | | |
| King's College School | | Old Kings | | | |
| King's College, Taunton | | Old Aluredians | Name "King's College" was given in honour of King Alfred, and "Aluredian" refers to him | | |
| The King's School, Chester | | Old King's Scholars | | Chester | |
| The King's School, Canterbury | | Old King's Scholars | | Canterbury | |
| The King's School, Peterborough | | Old Petriburgians | | | |
| King's School, Rochester | | Old Roffensians | "Roffensis" is a Latin adjective from Rochester's name in Old English | | |
| The King's School, Worcester | | Old Vigornians | Latin Vigorniensis, of Worcester | | |
| King's School, Bruton | | Old Brutonians | | | |
| King Edward VI Aston | | Aston Old Edwardians | | | |
| King Edward VI School (Bury St Edmunds) | | Old Burians | | | |
| King Edward VI Grammar School (Chelmsford) | | Old Chelmsfordians | | | |
| King Edward VI School, Southampton | | Old Edwardians | | Southampton | |
| King Edward VII School, Sheffield | | Old Edwardians | | Sheffield | |
| King Edward's School, Birmingham | | Old Edwardians | | Birmingham | |
| King Edward's School, Witley | | Old Witleians | | | |
| King Henry VIII School, Coventry | | Old Coventrians | | | |
| King George V College | | Old Georgians | | | |
| Kingswood School | | Old Kingswoodians | | Bath | |
| Kirkham Grammar School | | Old Kirkhamians | | | |
| Lancaster Royal Grammar School | | Old Lancastrians | | | |
| Lancing College | | Old Lancing | | | |
| Langley School, Loddon | | Icenians | Refers to the Iceni who once occupied the locality | | |
| Latymer Upper School | | Old Latymerians | | | |
| Lawrence Sheriff School | | Old Laurentians | | | |
| Leicester Grammar School | | Old Leicestrians | | | |
| Leighton Park School | | Old Leightonians | | | |
| Leeds Grammar School | | Old Leodiensians | | | |
| Liverpool College | | Old Lerpoolians | | | |
| The Leys School | | Old Leysians | | | |
| The Cathedral School, Llandaff | | Old Llandavians | | | |
| Llandovery College | | Old Llandoverians | | | |
| Lord Williams's School, Thame | | Old Tamensians | Refers to Thame | | |
| Loretto School | | Old Lorettonians | | | |
| Loughborough Grammar School | | Old Loughburians | | | |
| Ludgrove School | | Old Ludgrovians | | | |
| Lewis School, Pengam | | Old Ludovicans | Ludovicus, the Latin version of the name 'Lewis' | | |
| Magdalen College School, Oxford | | Old Waynfletes | After founder, William Waynflete | | |
| Maidstone Grammar School | | Old Maidstonians | | | |
| Malvern School | | Old Malvernians | | | |
| Manchester Grammar School | | Old Mancunians | Mancunia, a Latin name for Manchester | | |
| Marlborough College | | Old Marlburians | | | |
| Merchant Taylors' School, Crosby | | Old Crosbeians | | | |
| Merchant Taylors' School, Northwood | | Old Merchant Taylors | | | |
| Merchiston Castle School | | Merchistonians | | | |
| Midhurst Grammar School | | Old Midhurstians | | | |
| Millfield | | Old Millfieldians | | | |
| Mill Hill School | | Old Millhillians | | | |
| Monkton Combe School | | Old Monktonians | | | |
| Mount Radford School | | Old Radfordians | | | |
| North London Collegiate School | | Old North Londoners | | | |
| Northampton School for Boys | | Old Northamptonians | | | |
| Norwich School | | Old Norvicensians | From Norvic, Latin name of Norwich | | |
| Nottingham High School | | Old Nottinghamians | | | |
| Oakham School | | Old Oakhamians | | | |
| Old Swinford Hospital | | Old Foleyans | After founder, Thomas Foley | | |
| The Oratory School | | Old Oratorians | | | |
| Oswestry School | | Old Oswestrians[30] | | | |
| Oundle School | | Old Oundelians | | | |
| Pangbourne College | | Old Pangbournians | | | |
| Pate's Grammar School | | Old Patesians | | | |
| The Perse School | | Old Perseans | | | |
| Peter Symonds College | | Old Symondians | | | |
| Pierrepont School, Frensham | | Old Pierrepontians | | | |
| Pocklington School | | Old Pocklingtonians | | | |
| Port Regis School | | Old Portregians | | | |
| Portsmouth Grammar School | | Old Portmuthians | | | |
| Portora Royal School | | Old Portorans | | | |
| The Prebendal School | | Old Prebendalians | | | |
| Princethorpe College | | Old Princethorpians | | | |
| Queen's College, London | | Old Queens | | | |
| Queen's College, Taunton | | Old Queenians | | | |
| Queen Elizabeth's Grammar School, Blackburn | | Old Blackburnians | | | |
| Queen Elizabeth Grammar School, Wakefield | | Old Savilians | After one of founders Thomas Saville (1591) | | |
| Queen Elizabeth's Hospital | | Old Elizabethans | | | |
| Queen Margaret's School, York | | Old Margaretians | | | |
| Queen Mary's Grammar School | Grammar | Old Marians | | Walsall | |
| Queenswood School | | Old Queenswoodians | | | |
| Radley College | | Old Radleians | | | |
| Ratcliffe College | | Old Ratcliffians | | | |
| Ravenscroft School | | Old Ravens | | | |
| Reading School | | Old Redingensians | | | |
| Reed's School | | Old Reedonians | | | |
| Reigate Grammar School | | Old Reigatians | | | |
| Repton School | | Old Reptonians | | | |
| Rendcomb College | | Old Rendcombians | | | |
| Ripon Grammar School | | Old Riponians | | | |
| Roedean School | | Old Roedeanians | | | |
| Rossall School | | Old Rossallians | | | |
| Royal Belfast Academical Institution | | Old Instonians | | | |
| RGS Worcester | | Old Elizabethans | Chartered by Queen Elizabeth I | | |
| Royal Grammar School, Guildford | | Old Guildfordians | | | |
| Royal Grammar School, Newcastle | | Old Novocastrians | From Novocastria, Latin name of Newcastle | | |
| Royal Grammar School, High Wycombe | | Old Wycombiensians | | | |
| Royal Russell School | | Old Russellians | | | |
| The Royal School, Armagh | | Old Armachians | | | |
| Royal Wolverhampton School | | Old Royals | | | |
| Rugby School | | Old Rugbeians | | | |
| Ruthin School | | Old Ruthinians | | | |
| Rutlish School | | Old Rutlishians | | | |
| Rydal Penrhos | | Old Rydalians | | | |
| Rye St Antony School | | Old Girls of Rye | | | |
| Shrewsbury School | | Old Salopians | From Salopia, the Latin for Shropshire | | |
| Seaford College | | Old Seafordians | | | |
| Sedbergh School | | Old Sedberghians | | | |
| Sevenoaks School | | Old Sennockians | "Sennock", a local pronunciation of "Sevenoaks" | | |
| Sherborne School | | Old Shirburnians | | | |
| Sir George Monoux College | | Old Monovians | | | |
| Sir John Deane's College, Northwich | | Old Wittonians | From Witton, an ancient name for Northwich | | |
| Solihull School | | Old Silhillians | Solihull demonym | | |
| The Skinners' School | | Old Skinners | | | |
| St Andrew's School, Pangbourne | Prep | Old St Andrews | | | |
| St Bees School | | Old St Beghians | From Saint Bega | | |
| St Benedict's School | | Old Priorians | From school's original name, Ealing Priory School | | |
| St Clement Danes School | | Old Danes | | | |
| St Columba's College, St Albans | | Old Columbans | | St Albans | |
| St Dunstan's College | | Old Dunstonians | | | |
| St Edward's School, Oxford | | Old St Edwards | | | |
| St Faith's School | | Old Fidelians | Fides, fidelis Latin for "faith" | | |
| St George's College, Weybridge | | Old Georgians | | Weybridge | |
| St George's School, Harpenden | | Old Georgians | | Harpenden | |
| St Ignatius' College | | Old Ignatians | | | |
| St Ivo School | | Old Ivoans | | | |
| St John's College, Portsmouth | | Old Johannians | Per Laborem Ad Honorem | Southsea, Portsmouth | |
| St John's School, Leatherhead | | Old Johnians | | Leatherhead | |
| St Lawrence College, Ramsgate | | Old Lawrentians | | | |
| St Leonard's School | | St Leonards School Seniors | Avoids term old boys | | |
| St Olave's Grammar School | | Old Olavians | | | |
| St Paul's School, London | | Old Paulines | | | |
| St Paul's Girls' School | | Old Paulinas | | | |
| St Peter's School, York | | Old Peterites | | | |
| St Swithun's School, Winchester | | Old Swithunites | | | |
| Stamford School | | Old Stamfordians | | | |
| Stowe School | | Old Stoics | A pun on the name of "Stowe" and the philosophy of Stoicism | | |
| Stonyhurst College | | Old Stonyhursts | | | |
| Stockport Grammar School | | Old Stopfordians | "Stopfordian" means 'of Stockport' | | |
| Strand School | | Old Strandians | | | |
| Summer Fields School | | Old Summerfieldians | | | |
| Sunningdale School | | Old Sunningdalians | | | |
| Sutton Grammar School for Boys | | Old Suttonians | | | |
| Sutton Valence School | | Old SV | Abbreviation | | |
| Taunton School | | Old Tauntonians | | | |
| Tonbridge School | | Old Tonbridgians | | | |
| Trent College | | Old Tridents | From Tridentum, the Latin name of Trent | | |
| Trinity School of John Whitgift | | Old Mid-Whitgiftians | The original name of Trinity School was Whitgift Middle School| | |
| Truro School | | Old Truronians | | | |
| Twyford School | | Old Twyfordians | | | |
| University College School | | Old Gowers | After Gower Street, where it was located | | |
| Upton Court Grammar School | | Old Paludians | From Latin palus, a slough. See also Slough Grammar School | | |
| Victoria College, Jersey | | Old Victorians | | | |
| Uppingham School | | Old Uppinghamians | | | |
| Wallington County Grammar School | | Old Walcountians | | | |
| Warminster School | | Old Verlucians | William Camden's identification of the Roman town of Verlucio with Warminster | | |
| Watford Grammar School for Boys | | Old Fullerians | After founder Elizabeth Fuller | | |
| Warwick School | | Old Warwickians | | | |
| Wells Cathedral School | | Old Wellensians[31] | | | |
| Wellingborough School | | Old Wellingburians | | | |
| Wellington College, Berkshire | | Old Wellingtonians | | | |
| West Buckland School | | Old West Bucklands | | | |
| West Downs School | | Old West Downs | | | Closed 1988 |
| West Hill Park School | | Old Westhillians[32] | | | |
| Westcliff High School for Boys | | Old Westcliffians | | | |
| Westminster School | | Old Westminsters | | | |
| Whitgift School | | Old Whitgiftians | | | |
| William Hulme's Grammar School | | Old Hulmeians | | | |
| Wilson's School | | Old Wilsonians | | | |
| Wimbledon College | | Old Wimbledonians | | | |
| Wisbech Grammar School | | Wisbech Old Grammarians | | | |
| Worksop College | | Old Worksopians | | | |
| Wrekin College | | Old Wrekinians | | | |
| Wolverhampton Grammar School | | Old Wulfrunians | Wulfrunia, Latin for Wolverhampton | | |
| Worth School | | Old Worthians | | | |
| Wycliffe College (Gloucestershire) | | Old Wycliffians | | | |
| Winchester College | | Old Wykehamists | After founder William of Wykeham (1382) | | |
| Woodhouse Grove School | | Old Grovians | | | |
| Wycombe Abbey | | Wycombe Abbey Seniors | | | |
| Yarm School | | Old Yarumians | After the Viking name for Yarm, Yarum | | |