- Bishops Cleeve Players
- The Playhouse, 47-53 Bath Rd, Cheltenham, Gloucestershire, GL53 7HG, South West
- Bishops Cleeve Players
- The Tithe Barn, Cheltenham Road, Bishop Cleeve, Gloucestershire, GL52 8GD, South West
- Bishopsgate Institute
- Bishopgate Institute, 230 Bishopgate, London, London, EC2M 4QH, London
- Blackmore Theatre
- 10 Bicton Street, Exmouth, Devon, EX8 2RU, South West
- Blackpool & Fylde Light Opera Company
- The Grand Theatre, 33 Church Street, Blackpool, Lancashire, FY1 1HT, North West
- Blackwood Musical Theatre Society (formerly Blackwood Amateur Operatic and Musical Society)
- Blackwood Miners Institute, High St, Blackwood, Gwent, NP12 1AA, Wales
- Blakeney Players
- Blakeney Village Hall, Langham Road, Holt, Norfolk, NR25 7PG, Eastern
- Blue Hat Productions
- Cork Arts Theatre, Camden Court, Carroll's Quay, Cork City, County Cork
- Bold as Brass Productions
- Mitchel Arts Centre, 40 Broad Street, Hanley, Staffordshire, ST1 4HG, West Midlands
- Bolsover Drama Group
- Assembly Rooms, Hill Top, Bolsover, Derbyshire, S44 6NG, East Midlands