Governing Bodies
Here are all the county (and some others) governing body websites that I am aware of - and those I've hunted without success:
National
The RFU - the governing body for English rugby
The RFUW - the governing body for women's rugby with a RFU website
England Deaf Rugby Union
British Asian Rugby Association
Royal Air Force
Royal Navy
Army
University and college rugby
Counties
Bedfordshire - just contacts - go to East Midlands
Berkshire
Birmingham - unofficial site - go to North Midlands
Bristol and District Rugby Football Combination
Buckinghamshire - now through RFU portal
Cambridgeshire - RFU portal but also see under Eastern Counties
Cheshire - tidy and updated site
Cleveland - with Yorkshire?
Cornwall - lively and updated
Cumbria
Derbyshire - go to Notts, Lincs and Derby
Devonshire - RFU portal
Dorset and Wilts - RFU portal
Durham - substantial and updated
Eastern Counties - includes Cambridgeshire, Norfolk and Suffolk - good updated site
East Midlands - includes Huntingdon, Bedfordshire, Northamptonshire, Peterborough
Essex - the first new constituent body since 1954
Gloucestershire - RFU portal
Hampshire - good, updated site.
Hereford and Worcester - also in North Midlands?
Hertfordshire
Huntingdon and Peterborough - also look in East Midlands
Kent - updated, plenty to see and do
Lancashire - RFU portal
Leicestershire
Lincolnshire - go to Notts, Lincs and Derby
Middlesex - covers London
Norfolk - but also see under Eastern Counties
Northamptonshire - East Northants and Northants Alliance are in East Midlands
North Midlands - contains lots of counties, including Birmingham, Hereford, Worcester, Shropshire. Now updated
Northumberland - RFU portal
Notts, Lincs and Derby - plenty of material here
Oxford - RFU portal
Shropshire - in North Midlands
Somerset
South West Administration - administers English Clubs Championship in the south west
Staffordshire
Suffolk - also see Eastern Counties
Surrey - very good site with plenty of coverage
Sussex - very good site with plenty of coverage
Wiltshire - see Dorset and Wilts
Worcester and Hereford - also in North Midlands
Yorkshire