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020 3023 1112 Negative Who called me from this phone number?

London • Colt Technology Services
This number is a landline operated by Colt Technology Services and located in London, England. The overall user rating for this number is Negative. The number 02030231112 has been searched 10 times, with 1 user comment helping to identify the caller's intent.
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At a glance

Community signals

  • User reports: 1 user report
  • Searches: 10
  • Last reported: 8 months ago
  • First reported: 8 months ago
  • Typical call time: Usually weekdays 10-12

Number profile

  • UK format: 020 3023 1112
  • International: +442030231112
  • Number type: Landline
  • Carrier: Colt Technology Services
  • Area: London
  • Area code: 020

User Reports (1)

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

Scam/Fraud
04 Oct 2025

They said they were from National Grid and wanted to change our meter. However, the meter is the responsibility of the supplier, not the National Grid!

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What type of call was it?

Reported locations

Reported from 6 UK cities

Milland, London, Drumnadrochit, West Bromwich, Thornaby, Easton

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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 3023 1112 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 3023 1112
  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)

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Learn more about TPS registration

Latest reports

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Call Costs

Calling 02030231112 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 02030231112 directly.

International callers should dial +44 20 3023 1112 or 0044 20 3023 1112. No leading zero is required when dialling abroad, e.g., +44(0)2030231112.