Search The Phone Book from BT to find contact details of businesses and people across the UK, or UK and country dialling codes. You can of course use the dialling code (and the first few digits of the number) to narrow your search - using the book called BT … You'll likely need to pay to perform a search using them. Our database of Phone Numbers is Dedicated to United Kingdom users, who can check phone numbers and add opinions and reviews about unknown phone … I think BT waited for OFTEL to stop reverse searches for any reason - whether it breached copyright or not. Popular reverse lookup services include:; It is specifically aimed at identifying scam calls - enter the number, and it shows how many previous enquiries have been received. Try a reverse phone lookup service. Welcome to United Kingdom's Free Reverse Phone Lookup Website and Application "Who called me" bt. is another really useful free reverse call lookup service.