Dial Number London: 020 Area Code Explained for Calls and Local Context
Looking up the dial number for London? The geographic area code is 020. Learn how London numbers are written, then use nearby postcodes to research property and transport when the call is about a place.
What you will find in this guide
- Which neighbourhoods fit this search and which streets to compare first
- How to check the asking price with Land Registry sold data for SW1A 1AA and nearby codes
- Transport, schools and viewing checks before you offer
Tip: replace SW1A 1AA with any full postcode from a live listing to reuse every checklist below.
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London dial number basics
Searches for “dial number London” almost always mean the 020 area code. From outside the UK you dial the country code 44 and drop the leading zero, so 020 becomes +44 20.
Ofcom oversees UK numbering. Treat phone codes as communication labels, not as substitutes for Royal Mail postcodes when you research homes.
Useful links
- London postal code England guideinternal
- UK postcode format guideinternal
- Ofcom – phone numbers and area codesexternal
When a London call becomes a property search
If an agent or landlord quotes a London number and a street, confirm the full postcode and run area insights plus nearest stations. That protects you when marketing copy and geography do not match.
Continue with our London postcode and UK postcode in London articles for district context.
Useful links
- Area insightsinternal
- Nearest stationsinternal
- Map searchinternal
- London postcode guideinternal
- UK postcode in Londoninternal
Frequently asked questions
What is the dial number for London?
London’s geographic telephone area code is 020. Local numbers are commonly written as 020 followed by an eight digit subscriber number.
Is 020 the same across all London postcodes?
020 covers a wide geographic telephone area associated with Greater London. Property research still needs the full postal postcode, which is separate from the phone code.
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