020 3700 1243 Negative Who called me from this phone number?

London • BT
This number is a landline operated by BT and located in London, England. The overall user rating for this number is Negative. The number 02037001243 has been searched 231 times, with 7 user comments helping to identify the caller's intent.
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At a glance

Community signals

  • User reports: 7 user reports
  • Searches: 231
  • Last reported: 2 months ago
  • First reported: 3 months ago
  • Typical call time: before 3pm (96% of calls)

Number profile

  • UK format: 020 3700 1243
  • International: +442037001243
  • Number type: Landline
  • Carrier: BT
  • Area: London
  • Area code: 020

User Reports (7)

Your reports help others decide whether to answer calls from this number. Share your experience to help the community!

Unknown Caller
2 months ago

Called at 10.36am

Caller: Not known
Scam/Fraud
2 months ago

He asked me about my house needs. It's definitely a scam/fraud. When I ask where they found my phone number, they hang up. When you call the same number, an automated message welcomes you and says that the number you are calling is not in service. I can't believe you are receiving scam calls like this, and that you can't do anything about it, you are powerless! It's unbelievable that there is no solution for these calls in the UK.

Scam/Fraud
2 months ago

Asked about claims

Robocall
3 months ago

Silence for a 2 seconds after I answered makes this an obvious robo dialler. I hung up before they connected me to their scammer

Unknown Caller
3 months ago

Missed call

Unknown Caller
3 months ago

Today's 24th February 2026. Missed call.

Spam
3 months ago

Waited for 10 seconds after I said "hello" to then shout "hello hello" back at me. Unable to understand them so I hung up.

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What type of call was it?

Reported locations

Reported from 21 UK cities

London, Ringway, Methil, Camberwell, Barby, Clerkenwell, Salford, Brixton Hill, Crowland, Romford, Kennington, Bartley Green, London (South Bank), Rochester, Tilbury, Bredbury, Hammersmith, Loughborough, Walthamstow, Manchester, Edgware

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How to Block This Number

On iPhone

  1. Open the Phone app and go to Recents
  2. Find the number 020 3700 1243 and tap the info icon (i)
  3. Scroll down and tap Block this Caller
  4. Confirm by tapping Block Contact

On Android

  1. Open the Phone app and tap the 3-dot menu
  2. Go to Call history or Recents
  3. Long press on 020 3700 1243
  4. Select Block number or Block/report spam

On Landline Phones

Several options are available for UK landlines:

  • BT Call Protect - free for BT customers
  • TalkTalk CallSafe - free for TalkTalk customers
  • Call blocking devices like CPR Call Blocker (available on Amazon)

Register with TPS (Telephone Preference Service)

The TPS is a free service for UK consumers that allows you to opt out of unsolicited sales and marketing calls.

Learn more about TPS registration

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Call Costs

Calling 02037001243 from a landline may cost up to 16p per minute. Many providers charge a 23p call set-up fee. Call packages often include these types of calls. You might not incur additional charges for calling this number, depending on your provider.

Dialling Instructions

Local UK callers can dial 02037001243 directly.

International callers should dial +44 20 3700 1243 or 0044 20 3700 1243. No leading zero is required when dialling abroad, e.g., +44(0)2037001243.

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