History of telephone numbers in the United Kingdom
City New numbering Old numbering Notes
Leeds 0113 0ax xxxx 0532 0xxxxx 53 = LE
Leeds 0113 1ax xxxx 0532 1xxxxx
Sheffield 0114 0ax xxxx 0742 0xxxxx 74 = SH
Sheffield 0114 1ax xxxx 0742 1xxxxx
Nottingham 0115 0ax xxxx 0602 0xxxxx 60 = NO
Nottingham 0115 1ax xxxx 0602 1xxxxx
Leicester 0116 0ax xxxx 0533 0xxxxx 53 = LE
Leicester 0116 1ax xxxx 0533 1xxxxx
Bristol 0117 0ax xxxx 0272 0xxxxx 27 = BR
Bristol 0117 1ax xxxx 0272 1xxxxx
Number shortage -- National dialling only numbers
Telephone numbers in the United Kingdom have a structure that reflects their historical demands, starting from many independent companies to a system that supports many different services including cellular phones which were never initially envisaged.