General

GENUKI

http://www.genuki.org.uk/
The United Kingdom and Ireland Genealogical Information Service. Includes details of family history societies, archives, libraries and parish pages with information on cemeteries, church records and population. This well-indexed site, arranged by county is a must for UK research.

Associations

Federation of Family History Societies

Society of Genealogists

Nottinghamshire Family History Society

 

Libraries

The British Library

British Library catalogues on the web

National Library of Wales

Includes details of Welsh County Record Offices.

NLW Databases and Catalogues

Archives

The National Archives

The national archive of England, Wales and the United Kingdom.

UK Family History On-line (aka Family Records Centre)

Other

Surname Profiler

The Proceedings of the Old Bailey London 1674 to 1834

A fully searchable online edition of the largest body of texts detailing the lives of non-elite people ever published, containing accounts of over 100,000 criminal trials held at London's central criminal court.

BT Directory Enquiries

UK White Pages

Yell.Com

UK Yellow Pages

Family Tree Magazine (UK)

British Titles of Nobility

Tower Hamlets History on Line