Which UK city has the area dialling code 0113?
0114 0114 0114 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 (which corresponded to 0742 on a rotary dial), 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 (Leeds; 0113, Nottingham; 0115, Leicester; 0116 and Bristol; 0117), as
Subscriber trunk dialling when the Queen, who was in Bristol, publicized it by dialling Edinburgh – the farthest distance a call could be directly dialled. The STD system was completed in 1979, though most of the country was covered well before then. The system required that a new STD code, which could be dialled by subscribers, be allocated to each area; in the UK area codes are still sometimes called STD codes. With the introduction of subscriber trunk dialling each city with a Director system was assigned a 3-digit code, in which the second digit corresponded to the first letter of the city