Use BT Exchanges to find businesses and people. You can shortlist and save your contacts, view maps and get directions and read or write business reviews.
Search engine for finding people, business and places across the UK. Includes directory enquiry and local business searches as well as interactive mapping, aerial photography and property reports.
Search for residential and business phone numbers. Additionally you can find UK dial codes and international dial codes. This site is brought to you by BT.
You can search for phone numbers, and find post codes. The downside is you have to register in order to to do so.