rock737:
You need this:
http://www.airtimepublishing.co.uk/index.html
Which has the complete scheduled and charter details (or as complete as you will find) for all UK airports. The Summer 2004 ones will be published soon - you will need both their main books for the complete UK position. They have been in business for years and developed their accuracy well.
Bear in mind that increasingly UK airlines are doing charter series quite outside the UK though; there are several companies operating out of Dublin, as Ireland does not have an indigenous IT operator, and others, such as MyTravel with an aircraft based in Helsinki.