W020 is the national dialling code for London in the United Kingdom. The area it serves, which includes most of Greater London and some adjacent areas, was first allocated the STD code 01 in 1959. After a sequence of changes in the 1990s, culminating with the Big Number Change, the current 020 code became active on 1 June 1999. All subscriber numbers within the area code consist of eight digits and it has capacity for approaching 100 million telephone numbers. The code is used at 170 telephone exchanges as part of the largest linked numbering scheme in the United Kingdom. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling London from abroad.
W0114 is the national dialling code for Sheffield in the United Kingdom. The area it serves includes almost all of the City of Sheffield and some adjacent areas. When STD codes were first introduced, Sheffield was assigned the mnemonic 0SH2, later changing to the corresponding numbers upon the introduction of All-Figure Dialling in the area. Instead of the expected 01742 code, Sheffield's area code changed to the current 0114 code on 16 April 1995, along with 4 other cities in England, as part of PhONEday. All subscriber numbers within the area code consist of seven digits. The code is used at several telephone exchanges as part of a linked numbering scheme. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling Sheffield from abroad.
W0191 is the UK telephone dialling code used by Newcastle, Durham, Sunderland and other nearby areas in the north east of England.
WThe 01207 national dialling code for Consett in the United Kingdom. The area it serves includes almost the entire former district of Derwentside. When STD codes were first introduced, Consett was assigned 0207. The current 01207 code became active as part of PhONEday on 16 April 1995. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling Consett from abroad.
W01489 is the national dialling code for Hamble Valley in the United Kingdom. Before PhONEday the area code was 0489, with the mnemonic HV 9 where HV are taken from the letters H and V in Hamble Valley – an unofficially recognised geographic area surrounding the River Hamble in Hampshire. The dialling code is rarely ever referred to as Hamble Valley, but is instead referred to as Botley, or less frequently as Bishop's Waltham or Locks Heath. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling from abroad.
W01527 is the national dialling code for Redditch in the United Kingdom. Before PhONEday the area code was 0527. The mnemonic for 0527 corresponds with LA 9 where LA could have been taken from the letters L and A in Lapworth, a small village in Warwickshire close to Redditch but not served by the 0527 dialling code. The original dialling code for Redditch was 0739, with the mnemonic RE 9 where RE are taken from the letters R and E in Redditch.
WThe 01633 telephone area code covers the city of Newport and surrounding areas in the United Kingdom. Before PhONEday the area code was 0633, which was originally dialled as "0NE3" where the "NE" were formed from the first two letters of NEwport on the telephone dial. In common with all other British area codes the initial '0' is a trunk prefix that is dropped when dialling from abroad.
W01708 is the national dialling code for Romford in the United Kingdom. The area it serves includes almost all of the London Borough of Havering and some adjacent areas. When STD codes were first introduced, Romford was assigned 0708 and 0402 was used for the rest of the current code area. After a sequence of changes in the early 1990s, culminating with PhONEday, the current 01708 code became active on 16 April 1995. All subscriber numbers within the area code consist of six digits. The code is used at eight telephone exchanges as part a linked numbering scheme. In common with all other British area codes the initial '0' is a trunk prefix that is not required when dialling Romford from abroad.
W01932 is the national dialling code for Weybridge in the United Kingdom. Before PhONEday the area code was 0932. The mnemonic for 0932 corresponds with WE 2 where WE are taken from the letters W and E in Weybridge.