| Aymestrey Court Management Limited | Worcester | 2004 |
| Aynam Court Management Company Limited | Croydon | 1990 |
| Aynhoe Mansions Management Limited | London | 2025 |
| Aynhoe Park Estate Management Company Limited | Banbury | 2017 |
| Aynhoe Road Management Company Limited | | 1983 |
| Aynsley Court Management Limited | Shoreham-By-Sea | 1975 |
| Aynsley Court Residents Co. Limited | Sandwich | 1981 |
| Aynsome Mill Farm Management Company Limited | Grange-Over-Sands | 2001 |
| Ayot House Residents Limited | Welwyn | 1978 |
| Aypon Flat Management Limited | Torquay | 1996 |
| AYQ Ltd | London | 2020 |
| Ayres Road Management Company Limited | Manchester | 2004 |
| Aythorpe Roding Residents Management Company Limited | Salisbury | 2015 |
| Aytoun Property Solutions Limited | London | 2023 |
| AZ London Property Management Limited | Pinner | 2018 |
| Azalea (Alton) Leasehold Management Company Limited | Hemel Hempstead | 2019 |
| Azalea (Medstead) Leasehold Management Company Limited | Hemel Hempstead | 2018 |
| Azalea (Medstead) Management Company Limited | Hemel Hempstead | 2017 |
| Azalea Court (Bournemouth) Management Company Limited | Bournemouth | 2001 |
| Azalea Court Flat Management Company Limited | London | 1988 |
| Azalea Court Freehold Limited | Bournemouth | 2010 |
| Azalea Court Management Limited | Bournemouth | 2002 |
| Azalea Park Freehold Limited | Bournemouth | 2012 |
| Azalea RTM Company Limited | Feltham | 2021 |
| Azaleas RTM Company Limited | Bournemouth | 2024 |
| Azaz Properties Limited | Nottingham | 2024 |
| Azelin Court RTM Company Limited | Swindon | 2006 |
| Azenda Properties Limited | Ferryside | 1993 |
| Azendiv Limited | Bolton | 2017 |
| AZM Estates Limited | Ilford | 2024 |
| Azmol Avenue Limited | London | 2021 |
| Azor Close Management Company Limited | Sutton | 2018 |
| Azora Project Management Ltd | Bristol | 2025 |
| Azora Property Limited | London | 2018 |
| AZP Properties Ltd | Leeds | 2021 |
| Azsha Horizons Limited | Birmingham | 2023 |
| Aztec Estate Maintenance Limited | Ilkeston | 2022 |
| Aztec Property Developments Limited | Bradford | 2023 |
| Aztec Property Ltd | Kidlington | 2020 |
| Aztrac Ltd | Croydon | 2006 |
| Azure (Portishead) Management Company Limited | Salisbury | 2008 |
| Azure (Preston Road) Management Company Limited | Chard | 2022 |
| Azure 2 Management Company Limited | Salisbury | 2009 |
| Azure Apartments Limited | Brighton | 2024 |
| Azure Apartments Management Company Limited | Bourne End | 2007 |
| Azure Carbis Bay Residents Co. Ltd | Derby | 2021 |
| Azure Management Company Limited | London | 2006 |
| Azure Newquay Limited | Newquay | 2015 |
| Azure Plymouth Limited | Plymouth | 2002 |
| Azure Point Management Limited | East Hanney | 2009 |
| Azure Residents Company Limited | Dorking | 2007 |
| Azure Residents Management Company Limited | Edgware | 2003 |
| Azure Sky Property Limited | Birmingham | 2025 |
| Azzy Properties Ltd | Nottingham | 2022 |
| Azzy Property Ltd | Newcastle Upon Tyne | 2025 |
| B & D Property Management Ltd | Kington | 2019 |
| B & F Homes Limited | Keighley | 2022 |
| B & F International Property Ltd | Bury St. Edmunds | 2022 |
| B & G Properties (Nottingham) Limited | Market Harborough | 2015 |
| B & G Property Limited | Portland | 1999 |
| B & H Property Management Ltd | London | 2016 |
| B & K Property Limited | Doncaster | 2019 |
| B & P Management Limited | London | 2008 |
| B and R Accommodation Ltd | Amesbury | 2019 |
| B Block Lakeside Apartments RTM Company Limited | Sevenoaks | 2025 |
| B Bowser Limited | Richmond | 2025 |
| B D Jones Management Limited | Leeds | 1981 |
| B G Property Management Ltd | Grays | 2026 |
| B Hayes Limited | Weymouth | 2010 |
| B K D Management Limited | London | 2005 |
| B L Management Company (N.I.) Limited | Carrickfergus | 2023 |
| B Mcintyre Property Ltd | Sleaford | 2024 |
| B N J Holdings Ltd | Craigavon | 2025 |
| B Salt Holdings Limited | Bournemouth | 2025 |
| B T Trades Ltd | London | 2019 |
| B T Watts Properties Ltd | Northampton | 2020 |
| B&A Mcbride Property Ltd | Kilkeel | 2022 |
| B&Block Limited | London | 2026 |
| B&C Dream Properties Ltd | London | 2018 |
| B&C Property Group Limited | Ivybridge | 2026 |
| B&C STP Management Limited | Cromer | 2012 |
| B&G Global Services Limited | London | 2018 |
| B&H Domestic Support Services Ltd | Sunderland | 2021 |
| B&J Excellent Properties Ltd | Nottingham | 2012 |
| B&N Properties Development Ltd | Harrow | 2023 |
| B&Q Brothers Ltd | Liverpool | 2016 |
| B&R Property Group Ltd | Solihull | 2025 |
| B&R Residential Limited | London | 2025 |
| B&S Holdings North East Ltd | Burnley | 2026 |
| B&W Properties Limited | Crawley | 2025 |
| B'Stow's & Co Limited | Liverpool | 2020 |
| B-Hive Block Management Partners Limited | Richmond | 1989 |
| B-Niki Limited | Preston | 2024 |
| B. & C. (Duston) Management Company Limited | Northampton | 1982 |
| B. C. Flats NO. 1 (Southampton) Limited | Anson Drive | 1977 |
| B. C. Flats NO. 2 (Southampton) Limited | Sholing | 1977 |
| B. C. Flats NO. 3 (Southampton) Limited | Sholing Southampton | 1977 |
| B. D. Snaith Limited | Goole | 2009 |
| B. Jephson (Mansfield) Limited | Mansfield | 1975 |
| B. Prem Limited | High Wycombe | 2026 |