Registration Area Codes pre-2001

U Leeds
UA Leeds
UB Leeds
UC London (Central)
UD Oxford
UE Dudley
UF Brighton
UG Leeds
UH Cardiff
UJ Shrewsbury
UK Birmingham (Wolverhampton until 1974)
UL London (Central)
UM Leeds
UN Denbighshire prior to 1974, Barnstable 1974–80, Exeter from 1981
UO Exeter (Barnstaple until 1980)
UP Newcastle upon Tyne (Durham until 1981)
UR Luton (Hertfordshire until 1974)
US Glasgow
UT Leicester
UU London (Central)
UV London (Central)
UW London (Central)
UX Shrewsbury
UY Worcester