| Organisation | Regional Group |
|---|---|
| A1 Housing Bassetlaw | East Midlands |
| A2 Dominion | London and South East |
| Abbeyfield Societies | Wales |
| Accent Group | Yorkshire and Humberside |
| Accord Housing Association | West Midlands |
| Acis Housing Group | North West |
| Adactus Housing | North West |
| Aelwyd Housing Association | Wales |
| Affinity Sutton | London and South East |
| Aldwyck Housing Group | East Anglia |
| Alliance Homes | South West |
| Amicus Horizon | London and South East |
| Anchor Hanover Group | South West |
| Aster Group | South West |
| B3Living | East Anglia |
| Baneswell Housing Association | Wales |
| Bangor Diocesan Housing Association | Wales |
| Barnet Homes | East Anglia |
| Belle Isle Tenants Management Organisation | North East |
| Berneslai Homes of Barnsley | Yorkshire |