Records http://www.scotlandspeople.gov.uk/index.php?area=content/site_help/online_resources&id=-99
National Archives of Scotland http://www.nas.gov.uk
General Register Office for Scotland http://www.gro-scotland.gov.uk
National Library of Scotland http://www.nls.ac.uk
Public Record Office http://www.pro.gov.uk
Family Records.gov http://www.familyrecords.gov.uk
Public Record Office of Northern Ireland http://proni.nics.gov.uk
General Register Office for Northern Ireland http://www.groni.gov.uk
Societies
The Society of Genealogists http://www.sog.org.uk
The Federation of Family History Societies http://www.ffhs.org.uk
The Scottish Association of Family History Societies - includes contact details for most Scottish Family History Societies http://www.safhs.org.uk
Association of Family History Societies of Wales http://www.rootsweb.com/~wlsafhs
North of Ireland Family History Society http://www.nifhs.org
Scottish Genealogy Society http://www.scotsgenealogy.com
Burke's Peerage & Gentry http://www.burkes-peerage.net
Genealogy & Heritage
GENUKI – UK & Ireland Genealogy. Includes information on church parish locations and changes in county boundaries. http://www.genuki.org.uk
Scotland On Line - heritage portal for Scotland. http://www.scotlandonline.com/heritage
Statistical Accounts of Scotland - original parish and county histories from 1791-1799, 1837-1845 http://edina.ac.uk/StatAcc
Scottish Cultural Resources Access Network (SCRAN) http://www.scran.ac.uk
Maps  
Ordnance Survey maps (Landranger, Pathfinder & Gazetteer) www.ordsvy.gov.uk
Multimap - search by postcode and address anywhere in Britain www.multimap.com
Alan Godfrey Maps - detailed maps of urban areas www.alangodfreymaps.co.uk
Scottish district map www.trp.dundee.ac.uk/data/councils/newregions.html