020 area code: London

020 is the UK dialling code for London, in Greater London, England. Numbers are 020 followed by 8 digits. 0203, 0204, 0207 and 0208 aren’t separate codes: they are 020 followed by a local number that starts with 3, 4, 7 or 8.

Area: London
Where: Greater London, England
Written as: 020 xxxx xxxx
Digits in a full number: 11, including the 0
Calling from abroad: +44 20 xxxxxxxx
Phone companies holding ranges: 239 (Ofcom allocation data). This doesn’t show which company a particular number is with, or who uses it.

0203, 0204, 0207 and 0208: one code, not four

London has one area code, 020, and every London landline number is 020 followed by eight digits. Those eight digits start with 3, 4, 7 or 8, and people have long written the first of them next to the code, which is where “0207” and “0208” come from. There is no 0203, 0204, 0207 or 0208 area code, and the UK area code list explains the same mix-up.

The correct way to write a London number is 020 xxxx xxxx, for example 020 7946 0000, which is one of the numbers Ofcom keeps for TV and film. Typing 0203, 0204, 0207 or 0208 into this site brings you here.

Is a call from 020 a scam?

Not because of the code. 020 is used by London homes and businesses of every kind, and a number starting 0204 is no more or less trustworthy than one starting 0207: the digits after 020 prove nothing about who is calling. Caller ID can be faked, so judge the call by what the caller asks for, and check the full number to see what people have reported.

Reported 020 numbers

From reports people have sent us. We don’t check them, and a report is not proof.

Last report under 020: 28 September 2026.

Where 020 is

London is a city in Greater London, England.

Could it be someone you know?

A number showing 020 might look familiar. Check the full number before trusting the caller. It can help to think whether you know someone in or around London, Orpington or Lea Valley, have used a business there, booked or applied for something nearby, or are expecting a callback.

Codes near London

Straight-line distance from London.

Does 020 tell me who called?

No. 020 is assigned to London, but that doesn’t prove who is calling or where they are. Caller ID can be faked, a number keeps its code when it moves provider, and 239 phone companies hold ranges of 020 numbers. Search the full number to see what people have reported about it and which phone company its range was given to.

Caller says they’re your bank, HMRC, the police or a courier? Hang up and call a number you trust, from your card, a letter or their website, or dial 159 for most UK banks.

Ofcom keeps 020 7946 0000 to 020 7946 0999 for TV and film. Those numbers can never connect, so if one called you, the caller ID was faked.

Questions people ask

Is 0203 an area code?

No. The area code is 020, for London. The 3 is the first digit of the eight-digit local number, so an 0203 number is written 020 3xxx xxxx.

What is the 0204 area code?

It is also London. 0204 is 020, the London code, followed by a local number that starts with 4.

Who called me from 0204?

The code only tells you the number was issued for London. Check the full number here to see what other people reported about it and which phone company its range was given to.

Is 0207 more central London than 0208?

They are all 020 numbers. Where a caller is cannot be told from the digits: numbers move between phone companies, internet phone services sell London numbers to businesses anywhere, and caller ID can be faked.

How do I call an 020 number from abroad?

Dial +44 20 and then the eight-digit local number. Leave out the 0 at the start of 020.

Codes, code lengths and provider counts from Ofcom’s numbering data, downloaded 23 September 2026. Places from Wikidata. All UK area codes · Who called me? · Stop spam calls