020 3011 3836 Limited data

Community overview

Community rating: Limited data

2 user reports

First reported 5 Dec 2023 Last reported 10 months ago

User Reports (2)

Legitimate
07 Oct 2025

I called the number back, it's the NHS diabetic eye clinic.

Legitimate
05 Dec 2023

Eye clinic

Report this number

Help others by sharing what you know about this number. Your report matters.

Please do not include full names, private addresses, or abusive, hateful, or defamatory content.

Please feel free to read our Community Standards before posting. We ask that comments are based on genuine experience and shared in a factual and respectful manner.

What type of call was it?

How to Block This Number

On iPhone

  1. Open the Phone app and go to Recents
  2. Find the number 020 3011 3836 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 3011 3836
  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

About this number

Number formats

  • UK format: 020 3011 3836
  • International: +44 20 3011 3836

Number details

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

Recommended Guides

Check another number

Currently active UK phone numbers

UK phone numbers that have recently shown increased activity or interest.