The Rochester Sweeps festival in Rochester Kent - camping is not possible but there are a few B&Bs and a hotel.

http://www.medway.gov.uk/sweeps2009_new2_lr.pdf

Is a free festival (except big concert in Cathedra - Kate Rusby this year) and as several sing around sessions.

Friday 1 May

8.45–11pm (evening)
Ye Arrow – pre-festival music session
Prince of Wales, Strood – Sur Les Docks
Good Intent – singaround session with Ruff 'n' Reddy
Gordon House Hotel – pre-festival music session

Saturday 1 May

11.30am–7pm
Corn Exchange, bar – singaround session with Bob and Kathy Drage
12:30 - 2:30pm (actually runs much longer than 2 hours)
Good Intent – Singaround with John Barden
8:45 - 11:00pm
Good Intent – singaround with John Barden
in the bar, plus music session with Pete Cunningham in the garden

Sunday 3 May
11.30am – 7pm
Corn Exchange bar – singaround session with Bob & Kathy Drage
12.30–2.30pm (does end at 3:30 to make room for Gastove)
Good Intent – Singaround with John Barden
8:45 - 11:00pm
Good Intent – singaround with John Barden
in the bar, plus music session with Pete Cunningham in the garden

Monday 4 May
12.30–2.30pm
Good Intent – singaround with Ruff 'n' Reddy