British History
http://www.british-history.ac.uk
British Library
Commonwealth War Graves
Family History Federation
Family Search
Findagrave
FreeCen – search UK census data
FreeBMD
General Registration Office
https://www.gro.gov.uk/gro/content/
One-place Studies
http://www.one-place-studies.org
Railway accidents
http://www.railwayaccidents.port.ac.uk
Society of Genealogists
Workhouses
The Western Front Association
http://www.westernfrontassociation.com
UKBMD