What do we need to know? What does this mean? Where is this? What is his number? Where does she live How to I get there?
First, I guess, comes the General search engines of Google and Yahoo Then Wikipedia the free Encyclopedia
Google Maps will show a UK map if you give it a post code. and draw the route between two towns in the UK.
The Royal Mail has all you need about Post Codes and Mail. BT of course has the Phone Book
The National Rail Enquiries site has a railway journey planner and railway timetables. The Vauxhall cars web site used to have traffic info It's now here http://letscommunicate.co.uk/carputer/traffic/trafficnet.htm