Groups
- Aldermaston Players
- Aldermaston Parish Hall, Hall The St, Aldermaston, Berkshire, RG7 4LW, South East
- Aldridge Musical Comedy Society
- Aldridge Youth Theatre, Noddy Park Road, Aldridge, Staffordshire, WS9 8NQ, West Midlands
- All Saints Players
- All Saints Players, Gosnells
- All Souls Amateur Operatic Society
- Stage Doors Studio, 11 St James, Halifax, West Yorkshire, HX1 5SU, Yorkshire and Humberside
- Allerton Players
- The Forum, Bullamoor Road, Northallerton, North Yorkshire, DL6 1LP, Yorkshire and Humberside
- Allerton RADS
- United Reformed Church, Booker Ave, Liverpool, Merseyside, L18 7HD, North West
- Alton Operatic and Dramatic Society
- Alton Assembly Rooms, High St, Alton, Hampshire, GU34 1BA, South East
- Altrincham Garrick Playhouse
- Barrington Road, Altrincham, Cheshire, WA14 1HZ, North West
- Altrincham Little Theatre
- 17 Oxford Rd, Altrincham, Cheshire, WA14 2ED, North West
- Amaline Theatre
- Llanover Hall Arts Centre, Romilly Rd, Cardiff, Cardiff, CF5 1FH, Wales
