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United Kingdom Phone Number Format

Country code +44 — Complete guide to United Kingdom phone number formats, mobile and landline structures, and area codes.

How United Kingdom Phone Numbers Are Written

Phone numbers in the United Kingdom have 10 digits for mobiles and 9 or 10 for landlines after the country code +44. Inside the United Kingdom a number is written with a leading 0, which makes 11 digits: 074XX XXXXXX. Drop that 0 when you call from abroad or save the number in international format: +44 74XX XXXXXX.

Country code+44
Digits after +4410 digits for mobiles and 9 or 10 for landlines
Trunk prefix (domestic calls) 0, dropped after +44
Mobile numbers start with 071–075 or 077–079
Exit code (to call abroad from the United Kingdom)00
Dial from the US011 44 74XX XXXXXX

Mobile vs. Landline Numbers

Mobile numbers

10 digits after +44, starting with 071–075 or 077–079.

074XX XXXXXX at home
+44 74XX XXXXXX international
Landline numbers

9 or 10 digits after +44. Landlines begin with an area code, for example Birmingham:

0121 XXX XXXX at home
+44 121 XXX XXXX international

United Kingdom Number Types

Type Starts with Written at home International From the US
Mobile 071–075 or 077–079 074XX XXXXXX +44 74XX XXXXXX 011 44 74XX XXXXXX
Landline 011–019, 020, 023–024 or 028–029 0121 XXX XXXX +44 121 XXX XXXX 011 44 121 XXX XXXX
Toll-free 080 0800 XXX XXXX +44 800 XXX XXXX 011 44 800 XXX XXXX
Premium rate 084, 087, 090–091 or 098 0901 XXX XXXX +44 901 XXX XXXX 011 44 901 XXX XXXX
VoIP — 056 XXXX XXXX +44 56 XXXX XXXX 011 44 56 XXXX XXXX
Company number (UAN) — 055 XXXX XXXX +44 55 XXXX XXXX 011 44 55 XXXX XXXX

X stands for any digit. Source: libphonenumber metadata (phonenumbers 9.0.40), Google's open numbering data.

Checking a number from United Kingdom? The phone number checker tells you if it is valid, mobile or landline, and gives its international format.

United Kingdom Area Codes

Major area codes in United Kingdom:

Area Code City / Region
1224 Aberdeen
1235 Abingdon
1339 Aboyne
1252 Aldershot
1507 Alford (Lincs)
1259 Alloa
1420 Alton
1269 Ammanford
1264 Andover
1461 Annan
1241 Arbroath
1294 Ardrossan
1301 Arrochar
1276 Ascot
1335 Ashbourne
1364 Ashburton
1233 Ashford
1297 Axminster
1296 Aylesbury
1292 Ayr
1295 Banbury
1330 Banchory
1261 Banff
1248 Bangor (N. Wales)
1341 Barmouth
1226 Barnsley
1271 Barnstable
1229 Barrow-in-Furness
1446 Barry
1246 Basingstoke
1225 Bath
1506 Bathgate
1234 Bedford
1434 Bellingham
1289 Berwick-on-Tweed
1299 Bewdley
1237 Bideford
121 Birmingham
1388 Bishop Auckland
1279 Bishops Stortford
1254 Blackburn
1253 Blackpool
1250 Blairgowrie
1258 Blandford
1208 Bodmin
1204 Bolton
1423 Boroughbridge
1205 Boston
1202 Bournemouth
1451 Bourton-on-the-Water

Dialing Tips

  • Remove the leading 0: When dialing internationally, drop the trunk prefix (0) that is used for domestic calls in United Kingdom.
  • Use the + notation: From a US mobile phone, use +44 instead of 011 44.
  • Verify the number length: Numbers in the United Kingdom have 10 digits for mobiles and 9 or 10 for landlines after +44. If your call does not connect, check that no digit is missing or doubled.
  • Save contacts in international format: Always store phone numbers with the full +44 prefix so they work from any country.

United Kingdom Phone Number FAQ

How many digits does a phone number in the United Kingdom have?

Phone numbers in the United Kingdom have 10 digits for mobiles and 9 or 10 for landlines after the country code +44. Written for domestic calls with the leading 0, a mobile number has 11 digits.

What do mobile numbers in the United Kingdom start with?

Mobile numbers in the United Kingdom start with 071–075 or 077–079 when written for domestic calls. In international format the leading 0 is dropped: +44 74XX XXXXXX.

How do I write a phone number from the United Kingdom in international format?

Start with +44, then the national number without the leading 0. For example, a mobile number written 074XX XXXXXX at home becomes +44 74XX XXXXXX. From a US landline, dial 011 44 74XX XXXXXX.

What is the toll-free prefix in the United Kingdom?

Toll-free numbers in the United Kingdom start with 080, for example 0800 XXX XXXX. Many toll-free numbers can't be reached from abroad.

How do I call the US from the United Kingdom?

Dial the exit code 00, then 1 and the 10-digit US number: 00 1 XXX XXX XXXX. From a mobile phone you can use + instead of 00: +1 XXX XXX XXXX.

United Kingdom Quick Info
Country Code +44
ISO Code GB
Capital London
International Prefix 011 (from US)