County and regional club lists

London
http://www.londonchess.org.uk/main.php

South East
https://www.scca.co.uk/clubs/clubs_index.html
https://www.hampshirechess.co.uk/clubs/
https://sites.google.com/site/sussexcca/links
http://middlesexchess.blogspot.com/
https://www.essexchess.org.uk/

South West
http://www.cornwallchess.org.uk/html/links-row/clubs.shtml
http://devonchess.com/clubs
http://somersetchess.org/
https://www.dorsetchess.co.uk/dorset-clubs/
https://www.chessit.co.uk/Link%20Buttons/Clubs.htm

East
http://www.adrianelwin.co.uk/Bedfordshire/Bedfordshire.html
http://www.lincschess.org/info.php

Midlands
http://www.warwickshirechess.org/Information.aspx
http://www.worcestershirechess.org.uk/clubs.htm
https://www.shropshirechess.org/General%20Secretary/SCA_Clubs.htm
https://www.chessinnorthampton.org/northamptonshire-league-portal/
https://www.oxfordfusion.com/oca/GetClubs.cfm?Org=1&junior=no

North West
https://www.manchesterchess.com/clubs-near-you (may be insecure)
https://merseysidechess.org.uk/mca-chess-clubs-public
https://www.lancashirechess.uk/

North East
https://dcca.org.uk/
http://www.cumbriachess.com/Clubs.html

Yorkshire
https://mannchess.org.uk/YStatic/Clubs.htm