PhONEday

Logo used in informational material.

PhONEday was a change to the telephone dialing plan in the United Kingdom on 16 April 1995. It changed geographic area codes and some telephone numbers. In most areas a "1" was added to the dialling code. In Bristol, Leeds, Leicester, Nottingham and Sheffield the area codes were replaced with new codes and the subscriber numbers gained an extra digit. The PhONEday changes also made provision for new ranges of subscriber numbers in those five cities. A £16m advertising campaign, and an eight-month period of parallel running during which old and new codes were active, preceded the change.^[1] PhONEday followed a change made in May 1990 when the old London area code 01 had been released from use, permitting all United Kingdom geographic numbers to begin with this prefix. Originally planned in 1991 to take place in 1994,^[2] in 1992 the change was postponed until 1995.^[2]

The PhONEday changes also released space for new geographic area codes beginning 02, which would come into use as part of the Big Number Change in 2000. The changes also allowed 10-digit numbers beginning 07, 08, and 09 to be used for mobile, non-geographic, and premium-rate services, from 1997 onwards, with all remaining 9-digit mobile, non-geographic, and premium-rate numbers from 02 to 09 being converted to 10 digits and moved into the 07, 08, and 09 prefixes in 2001.

Number changes

Additional "1"

On PhONEday, 16 April 1995, the digit "1" prefixed all geographic area codes. For example, the code for Inner London changed from 071 to 0171 and the code for Reading changed from 0734 to 01734. Other examples were:

Area	New numbering	Old numbering
Coventry	(01203) xxxxxx	(0203) xxxxxx
Birmingham	(0121) xxx xxxx	(021) xxx xxxx
Cardiff	(01222) xxxxxx	(0222) xxxxxx
Ashford	(01233) xxxxxx	(0233) xxxxxx
Blackburn	(01254) xxxxx or xxxxxx	(0254) xxxxx or xxxxxx
Cromer	(01263) xxxxxx	(0263) xxxxxx
Castle Point	(01268) xxxxxx	(0268) xxxxxx
Edinburgh	(0131) xxx xxxx	(031) xxx xxxx
Derby	(01332) xxxxxx	(0332) xxxxxx
Dundee	(01382) xxxxxx	(0382) xxxxxx
Evesham	(01386) xxxxx or xxxxxx	(0386) xxxxx or xxxxxx
Dumfries	(01387) xxxxxx	(0387) xxxxxx
Langholm	(0138 73) xxxxx	(038 73) xxxxx
Glasgow	(0141) xxx xxxx	(041) xxx xxxx
Hull	(01482) xxxxxx	(0482) xxxxxx
Liverpool	(0151) xxx xxxx	(051) xxx xxxx
Lancaster	(01524) xxxxx or xxxxxx	(0524) xxxxx or xxxxxx
Hornby	(0152 42) xxxxx	(052 42) xxxxx
Jersey	(01534) xxxxxx	(0534) xxxxxx
Luton	(01582) xxxxxx	(0582) xxxxxx
Chipping Norton	(01608) xxxxxx	(0608) xxxxxx
Manchester	(0161) xxx xxxx	(061) xxx xxxx
Maidenhead^[3]	(01628) xxxxxx	(0628) xxxxxx
Maidenhead^[3]	(01628) 6xxxxx	(0628) xxxxx
Magherafelt	(01648) xxxxx or xxxxxx	(0648) xxxxx or xxxxxx
Cookstown	(0164 87) xxxxx	(064 87) xxxxx
Melton Mowbray	(01662) xxxxx or xxxxxx	(0662) xxxxx or xxxxxx
Malvern	(01684) xxxxxx	(0684) xxxxxx
Wigton	(0169 73) xxxxx	(069 73) xxxxx
Brampton^{[lower-alpha 1]}	(0169 77) xxxxx	(069 77) xxxxx
Brampton^{[lower-alpha 1]}	(0169 77) xxxx	(069 77) xxxx
Southampton	(01703) xxxxxx	(0703) xxxxxx
Uxbridge	(01895) xxxxxx	(0895) xxxxxx
Inner London	(0171) xxx xxxx	(071) xxx xxxx
Sevenoaks	(01732) xxxxxx	(0732) xxxxxx
Reading	(01734) xxxxxx	(0734) xxxxxx
Outer London	(0181) xxx xxxx	(081) xxx xxxx
Tyneside/Durham/Sunderland	(0191) xxx xxxx	(091) xxx xxxx

New short codes

Five new shorter area codes were introduced for cities that were running low on available phone numbers and a digit was prepended to each subscriber number.

City	New numbering	Old numbering
Leeds	(0113) 2xx xxxx	(0532) xxxxxx
Sheffield	(0114) 2xx xxxx	(0742) xxxxxx
Nottingham	(0115) 9xx xxxx	(0602) xxxxxx
Leicester	(0116) 2xx xxxx	(0533) xxxxxx
Bristol	(0117) 9xx xxxx	(0272) xxxxxx

This also affected some national dialling only numbers for those cities:

City	New numbering	Old numbering
Leeds	0113 0ax xxxx	0532 0xxxxx
Leeds	0113 1ax xxxx	0532 1xxxxx
Sheffield	0114 0ax xxxx	0742 0xxxxx
Sheffield	0114 1ax xxxx	0742 1xxxxx
Nottingham	0115 0ax xxxx	0602 0xxxxx
Nottingham	0115 1ax xxxx	0602 1xxxxx
Leicester	0116 0ax xxxx	0533 0xxxxx
Leicester	0116 1ax xxxx	0533 1xxxxx
Bristol	0117 0ax xxxx	0272 0xxxxx
Bristol	0117 1ax xxxx	0272 1xxxxx

International access

The international access code also changed on PhONEday, from 010 to 00 thus meeting the international call prefix standard set by the International Telecommunications Union (ITU).

Legacy

In cities that were running out of subscriber numbers new sub-ranges beginning with a different initial digit to existing numbers started to be allocated. For example, in Sheffield (0114) when the 2xx xxxx numbers were exhausted, new numbers then began to be issued from the 3xx xxxx range. Similarly, newly allocated numbers in Leeds (0113), Leicester (0116) and Bristol (0117) also came from the 3xx xxxx range, but in Nottingham (0115), the new numbers instead came from the 8xx xxxx range. Less than a decade later, further new ranges were opened in most of these areas, but this time new Leicester numbers are in the 4xx xxxx range, new Bristol numbers are in the 2xx xxxx range, new Nottingham numbers are in the 7xx xxxx range and new Leeds numbers are in the 4xx xxxx and 8xx xxxx ranges.^[6]

City	Number range	Usage
Leeds
	(0113) 2xx xxxx	Numbers transferred from (0532) xxxxxx
	(0113) 3xx xxxx	New phase of numbers, issued from 1997
	(0113) 4xx xxxx	New phase of numbers, issued from 2010
	(0113) 8xx xxxx	New phase of numbers, issued from 2006
Sheffield
	(0114) 2xx xxxx	Numbers transferred from (0742) xxxxxx
	(0114) 3xx xxxx	New phase of numbers, issued from 2004
	(0114) 4xx xxxx	New phase of numbers, issued from 2009
Nottingham
	(0115) 2xx xxxx	New phase of numbers, issued from 2009
	(0115) 7xx xxxx	New phase of numbers, issued from 2006
	(0115) 8xx xxxx	New phase of numbers, issued from 1997
	(0115) 9xx xxxx	Numbers transferred from (0602) xxxxxx
Leicester
	(0116) 2xx xxxx	Numbers transferred from (0533) xxxxxx
	(0116) 3xx xxxx	New phase of numbers, issued from 2004
	(0116) 4xx xxxx	New phase of numbers, issued from 2009
Bristol
	(0117) 2xx xxxx	New phase of numbers, issued from 2007
	(0117) 3xx xxxx	New phase of numbers, issued from 1997
	(0117) 4xx xxxx	New phase of numbers, issued from 2012
	(0117) 9xx xxxx	Numbers transferred from (0272) xxxxxx

After PhONEday, further changes to geographic area codes were made in Reading three years later and in London, Southampton, Portsmouth, Coventry, Cardiff and Northern Ireland at the Big Number Change five years later. Much later, a new area code (01987) was created for Ebbsfleet in 2007.

The changes made at PhONEday were one step towards reorganising the numbering plan at a later date, so that the first two digits would indicate the type of service called.^[7] PhONEday had cleared area codes from 02 to 09 of all geographic allocations by converting 9-digit numbers to 10-digit 01 numbers (and, in parts of at least 47 area codes, 8-digit numbers to 9-digit 01 numbers). After PhONEday, all pre-existing 9-digit mobile, non-geographic, premium rate, personal and pager numbers from 02 to 09 remained in place. Those would be moved to new 07, 08 and 09 prefixes and converted to 10-digits in the Big Number Change in 2000. However, from 1997 onwards, all new numbers for those services were allocated with 10-digits and already conforming to the new number plan: mobile phones (077xx, 078xx, 079xx), personal numbers (070), pagers (076), local-rate non-geographic revenue-share (0845), national-rate non-geographic revenue-share (0870) and premium rate (090x). Gaps were left within each of those new 10-digit number ranges to allow for the older 9-digit 02 to 09 numbers to migrate in the Big Number Change. Freephone numbers were an exception. Older 9-digit 0500 and 0800 numbers as well as newer 10-digit 0800 and 0808 numbers all remained in use after the Big Number Change.

Notes

↑ In 1995, Brampton (06977) 2xxx and (06977) 3xxx (4+4 format) numbers became (016977) 2xxx and (016977) 3xxx (5+4 format) numbers. Oftel "forgot" to update those two entries in the numberplan, leaving them as "4+4" and thereby incorrectly implying (01697) 72xx and (01697) 73xx - with both an incorrect area code and the final digit missing from the subscriber number. It took 15 years for Ofcom to correct these errors in the "s1_code.txt" allocation file. The relevant entries are now correctly marked as "5+4" format, but the errors remain in other Ofcom documents such as "sabc.txt". Ofcom has ignored warnings made by BT in 2003 and by others in more recent years. Additionally, (016977) 6xxxx to (016977) 9xxxx are still incorrectly marked as "4+6" format in Ofcom's data, when in reality they are "5+5" format.^[4]^[5]

References

↑ Whitfield, Martin (1995-04-15). "BT braced for wrong-number barrage on Phoneday". The Independent. Retrieved 2012-09-25.
1 2 "A brief history of recent UK telecoms and Oftel". Ofcom. 1999. Retrieved 7 January 2014.
↑ "Maidenhead area telephone information". maidenhead.net. 13 September 2001. Retrieved 9 January 2014.
↑ Erdunast, Howard (2003-05-16). "BT's Response to the Consultation by OFTEL on Proposals to Publish a National Telephone Numbering Plan" (PDF). British Telecommunications PLC. Retrieved 2010-04-02. Page 7: '01697 – Brampton should be 016977; not 01697'.
↑ Director General of Telecommunications (2003-07-09). "The National Telephone Numbering Plan" (PDF). Oftel. Office of Telecommunications. Retrieved 2010-04-02. Page 20 shows Brampton listed as 0169 77.
↑ Ofcom. "The National Numbering Scheme : Telephone Numbers administered by Ofcom". Office of Communications. Retrieved 2010-07-28.
↑ Ofcom (1999). "The Big Number - your questions answered". Office of Communications. Retrieved 2012-09-25.

Telephone numbers in the United Kingdom

Number plan	List of dialling codes Non-geographic numbers

Number changes	All-figure dialling Area name changes Big Number Change Code misconceptions PhONEday

Special numbers	100 101 111 112 116000 116111 116123 118xxx 123 141 1471 150 155 1571 999

Geographic area codes	113 114 115 116 117 118 1200 1202 1204 1205 1206 1207 1208 1209 121 1223 1224 1225 1226 1227 1228 1229 1233 1234 1235 1236 1237 1239 1241 1242 1243 1244 1245 1246 1248 1249 1250 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1267 1268 1269 1270 1271 1273 1274 1275 1276 1277 1278 1279 1280 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 131 1320 1322 1323 1324 1325 1326 1327 1328 1329 1330 1332 1333 1334 1335 1337 1339 1340 1341 1342 1343 1344 1346 1347 1348 1349 1350 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1366 1367 1368 1369 1371 1372 1373 1375 1376 1377 1379 1380 1381 1382 1383 1384 1386 1387 13873 1388 1389 1392 1394 1395 1397 1398 1400 1403 1404 1405 1406 1407 1408 1409 141 1420 1422 1423 1424 1425 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1442 1443 1444 1445 1446 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1460 1461 1462 1463 1464 1465 1466 1467 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1499 1501 1502 1503 1505 1506 1507 1508 1509 151 1520 1522 1524 15242 1525 1526 1527 1528 1529 1530 1531 1534 1535 1536 1538 1539 15394 15395 15396 1540 1542 1543 1544 1545 1546 1547 1548 1549 1550 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1575 1576 1577 1578 1579 1580 1581 1582 1583 1584 1586 1588 1590 1591 1592 1593 1594 1595 1597 1598 1599 1600 1603 1604 1606 1608 1609 161 1620 1621 1622 1623 1624 1625 1626 1628 1629 1630 1631 1633 1634 1635 1636 1637 1638 1639 1641 1642 1643 1644 1646 1647 1650 1651 1652 1653 1654 1655 1656 1659 1661 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1680 1681 1683 1684 1685 1686 1687 1688 1689 1690 1691 1692 1694 1695 1697 16973 16974 16977 1698 1700 1702 1704 1706 1707 1708 1709 1720 1721 1722 1723 1724 1725 1726 1727 1728 1729 1730 1732 1733 1736 1737 1738 1740 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1756 1757 1758 1759 1760 1761 1763 1764 1765 1766 1767 1768 17683 17684 17687 1769 1770 1771 1772 1773 1775 1776 1777 1778 1779 1780 1782 1784 1785 1786 1787 1788 1789 1790 1792 1793 1794 1795 1796 1797 1798 1799 1803 1805 1806 1807 1808 1809 1821 1822 1823 1824 1825 1827 1828 1829 1830 1832 1833 1834 1835 1837 1838 1840 1841 1842 1843 1844 1845 1847 1848 1851 1852 1854 1855 1856 1857 1858 1859 1862 1863 1864 1865 1866 1869 1870 1871 1872 1873 1874 1875 1876 1877 1878 1879 1880 1882 1883 1884 1885 1886 1887 1888 1889 1890 1892 1895 1896 1899 1900 1902 1903 1904 1905 1908 1909 191 1920 1922 1923 1924 1925 1926 1928 1929 1931 1932 1933 1934 1935 1937 1938 1939 1942 1943 1944 1945 1946 19467 1947 1948 1949 1950 1951 1952 1953 1954 1955 1957 1959 1962 1963 1964 1967 1968 1969 1970 1971 1972 1974 1975 1977 1978 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1992 1993 1994 1995 1997 20 23 24 28 29

Non-geographic prefixes charged at geographic rate	300 302 303 306 330 331 332 333 342 343 344 345 370 371 372 373

Personal, pager, VoIP and corporate numbering	55 56 70 76

Mobile telephone prefixes	71xx 73xx 74xx 75xx 7624 77xx 78xx 79xx

Freephone prefixes	500 800 808

Non-geographic prefixes with revenue share (NTS)	842 843 844 845 870 871 872 873

Premium Rate Services (PRS)	900 901 902 903 904 905 906 907 911 912 913

Adult services (SES)	908 909 982 983 984 989

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