020 3424 3427
Also shown as:
- 020 3424 3427
- +44 20 3424 3427
AI Summary
Based on 2 community reports
This London number has generated mixed reports, with one person identifying it as Macmillan Cancer Support and another claiming to have asked them to stop making calls. With only two reports and no upvotes or downvotes on either, it's difficult to say with confidence whether this is a legitimate charity contact or an unwanted nuisance caller.
If you have previously donated to or engaged with Macmillan Cancer Support, this could be a genuine call from their fundraising or support team. However, if you have no connection to the charity or have previously asked not to be contacted, you are within your rights to request removal from their calling list. You can verify by calling Macmillan directly through their official website at macmillan.org.uk.
2 verified reports
Cumulative spam score based on all reports up to each month. Higher percentage means higher reported scam risk. Cumulative spam score based on all reports up to each week. Higher percentage means higher reported scam risk. Cumulative spam score based on all reports up to each day. Higher percentage means higher reported scam risk.
Most helpful reports
2 totalMacmillan cancer support
MacMillan said to stop calling me
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About 020 3424 3427
What type of number is 020 3424 3427?
The phone number 020 3424 3427 (also written as +44 20 3424 3427) is a UK landline number originating from the London area in Greater London . Calls to this number are charged at standard UK landline rates, usually included in call packages.
Is 020 3424 3427 safe to answer?
Based on 2 community reports, this number has received mixed reports from our community. The current risk score is 40% 1 report confirming it as safe .
Be cautious when answering calls from this number. Verify the caller's identity before sharing any information.
More on nuisance calls
Safety Score
Details
- Tel Number
- 020 3424 3427
- Country
- 🇬🇧 United Kingdom
- Network
- Nuso Cloud UK
- Area
- London
- Type
- Geographic
- First Seen
- 17 Apr 2026
Protection Guides
How to Block This Number
Step-by-step instructions for iPhone, Android, and landlines
Silent and Abandoned Calls
Your phone rings, you answer, and nobody speaks. What causes silent and abandoned calls in the UK, when to worry, and how to report them to Ofcom.
Report Nuisance Calls to Ofcom
How to report unwanted calls to Ofcom and what happens next. Plus 7726 spam text reporting.
Report to Ofcom
How to report nuisance calls officially
Location
London, United Kingdom
This number originates from the London area code region. The map shows the general geographic area, not an exact location.
Call Types
Breakdown of reported call reasons. Larger segments and bars represent a bigger share of reports.
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