Do any of these titles sound interesting to you?
A Dictionary of English and Welsh Surnames
A History of Illnesses and Diseases in the UK
A Reference Book of English History
Aircraft Crash Record Office
Bethlem Royal Hospital Archives
Birthdate Calculator from Death Date and Age
British Military & Criminal History in the period 1900 to 1999
British Pathe Film Archive
Commissioned Sea Officers of the Royal Navy
English Calendar Quick Reference
Great Ships - Postcard and Ephemera Collection
Index of Lunatic Asylums and Mental Hospitals
IreAtlas Townland Search
Lloyds Register of British and Foreign Shipping from 1764 up to 2003
Military Badges and Military Images
Money and Coinage in Victorian Britain
Palmer List of Merchant Vessels
Poor Law Union Database
Postcards of Ocean Liners
Pottery Industry Jobs and Descriptions
They're just part of the content you'll find at UKGDL which "aims to help you find out the history of your family by linking to web sites that have on-line data which will help you discover what your families did and how they lived.
School lists, trade directories, electoral rolls, passenger lists, old photographs etc., are all valuable sources of information which can help you complete your family tree – many are now listed under UKGDL's menus."
Be sure you have plenty of time to explore UKGDL.