Personalised Number Plate Information

By 1932, the available numbers within this scheme were running out, and an extended scheme was introduced. This scheme consisted of three letters and up to three digits, taken from the series AAA 1 to YYY 999. The letters I, Q, and Z were never used, as they were considered too easy to mistake for other letters or numbers or were reserved for special use, such as the use of I and Z for Irish registrations and Q for temporary imports. (After independence, the Republic of Ireland continued to use this scheme until 1986, and Northern Ireland still uses it.)

The first series of number plates were issued in 1903 and ran until 1932, using the series A 1 to YY 9999. The letter or pair of letters indicated the local authority in whose area the vehicle was registered, for example A - London, B - Lancashire, C - West Riding of Yorkshire. In England and Wales the letter codes were initially allocated in order of population size (by the 1901 census) whilst Scotland and Ireland had their own sequences incorporating the letters S" and "I" respectively, which were allocated alphabetically: IA = Antrim, IB = Armagh, etc. When a licensing authority reached 9999, it was allocated another two letter mark, but there was no pattern to these subsequent allocations as they were allocated on a first come first served basis. There are three interesting anomalies where a zero has been issued - The Lord Provost of Edinburgh has S 0 and his Glasgow counterpart has G 0 while the official car of the Lord Provost of Aberdeen has RG 0. In addition the Lord Mayor

It should be noted that there are no restrictions on using a vanity or cherished registration on a car that is newer than the original date of the registration plate, but it is prohibited to transfer a registration that is newer than the vehicle it is used on. This is to prevent the transfer of newer registrations to older vehicles as a measure to protect consumers.