UK Post Offices by County - Ken Smith's county lists of POs, showing dates of opening and closure
- illustrated lists of postmarks, compiled by Colin Fountain and John Hine. A work in progress - additions welcome!
Postal History Organisations
The Postal Museum (formerly British Postal Museum & Archive)
British Airmail Society
Caledonian Philatelic Society
East Anglian Postal History Society
Railway Philatelic Group for collectors of railway-related stamps and postmarks
UK Meter Franking including downloadable "Meter News"
Welsh Postal History Society
Postal and Philatelic Organisations