Top Reported UK Scam Numbers

The UK phone numbers with the highest community-reported spam scores in our index. Aggregated daily from our free UK Number Checker lookups plus external community-report data (tellows).

How the ranking is built

For each UK number we have tellows community data on, we record their 1–9 spam score. Scores 7–9 are treated as real spam signal (matching tellows' own convention); 4–6 are neutral / unrated; 1–3 are trusted numbers. We exclude numbers tellows flags as “not rated yet”. The list refreshes nightly alongside our other aggregations.

Looking up a specific number?

Use the free UK Phone Number Checker — instant Ofcom range-holder lookup, risk assessment, and per-number reporting page.