020 4539 4123

Negative

Community overview

Community rating: Negative

9 user reports

First reported 4 Feb 2026 Last reported 8 months ago

About this number

Number formats

  • UK format: 020 4539 4123
  • International: +44 20 4539 4123

Number details

  • Number type: Landline
  • Number range allocated to: BT
  • Area: London
  • Area code: 020

Reported categories

Based on 9 public user reports

Unknown Caller
44% (4)
Scam/Fraud
33% (3)
Spam
22% (2)

User Reports (9)

Scam/Fraud
8 months ago

They said my insurance had run out on my pipe work said they were from southern water, scam...

Unknown Caller
8 months ago

Didn’t answer

Unknown Caller
8 months ago

I didn't answer, came up as suspected spam.

Spam
8 months ago

didn't answer as caller ID was potential fraud

Spam
8 months ago

Didn't answer

Scam/Fraud
8 months ago

water company I do not deal with.Scam

Scam/Fraud
8 months ago

said they were from severn trent, and my insurance was due renewal for drainage cover. Which I have never had. Spoke with Severn trent, and confirmed its a scam.

Unknown Caller
8 months ago

Lady called me saying they were a company attached to Affinity Water and mentioned my address and that is as far as we got the call was cut off then. they have not called back

Unknown Caller
8 months ago

Unsolicited call

Report this number: 020 4539 4123

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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 4539 4123 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 4539 4123
  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)

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