| Block 6 Heritage Park RTM Company Limited | Croydon | 2016 |
| Block 6 Porters Wood Management Company Limited | St Albans | 2005 |
| Block 7 Kingfisher Phoenix Park Limited | Leighton Buzzard | 2024 |
| Block 7 Management Company Limited | Llandudno | 2024 |
| Block a & B OWS RTM Company Limited | Ticehurst | 2025 |
| Block a (1 - 7) Indigo Mews RTM Company Limited | Wimborne | 2016 |
| Block a 9 the Upper Drive Limited | Hove | 2023 |
| Block a Altamira Residents Association Limited | Exmouth | 1988 |
| Block a Erddig Road Management Company Limited | | 2007 |
| Block a Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block a Lozelles Gardens RTM Company Limited | Cardiff | 2024 |
| Block a Millennium Drive Management Company Limited | Luton | 2000 |
| Block a Parkwood Flats RTM Company Limited | London | 2016 |
| Block a Phase 4 Colindale Management Limited | Waltham Cross | 2015 |
| Block a Residents Management Company Limited | Whitstable | 2004 |
| Block a Roseberry Court Residents Company Limited | Biggleswade | 1983 |
| Block B 9 the Upper Drive Limited | Hove | 2023 |
| Block B Altamira Residents Association Limited | Exmouth | 1988 |
| Block B Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block B Parkwood Flats RTM Company Limited | London | 2016 |
| Block B Residents Management Company Limited | Whitstable | 2004 |
| Block Buddy Ltd | Eckington | 2023 |
| Block C & D OWS RTM Company Limited | Ticehurst | 2025 |
| Block C 9 the Upper Drive Limited | Milton Keynes | 2023 |
| Block C Altamira Residents Association Limited | Exmouth | 1988 |
| Block C Erddig Road Management Company Limited | | 2007 |
| Block C Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block C OM Limited | London | 2026 |
| Block C Parkwood Flats RTM Company Limited | London | 2016 |
| Block C Residents Management Company Limited | Whitstable | 2004 |
| Block C White Land (Forum) Resident Management Company Limited | New Milton | 2025 |
| Block D Altamira Residents Association Limited | Exmouth | 1988 |
| Block D Astley House Management Company Limited | London | 1997 |
| Block D Clouston Avenue RTM Company Limited | Bushey | 2023 |
| Block D Freshwater Drive (Hamworthy) Limited | Bournemouth | 2003 |
| Block D Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block D Limited | Brighton | 2023 |
| Block D Parkwood Flats RTM Company Limited | London | 2016 |
| Block D Residents Management Company Limited | Whitstable | 2004 |
| Block E Altamira Residents Association Limited | Exmouth | 1988 |
| Block E Church Farm Aldeburgh Limited | St Albans | 2000 |
| Block E Gilbert House Management Company Limited | London | 1997 |
| Block E Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block E OWS RTM Company Limited | Ticehurst | 2025 |
| Block E Regis Park (Sefter Road) Management Company Limited | Salisbury | 2025 |
| Block F Altamira Residents Association Limited | Exmouth | 1988 |
| Block F Clouston Avenue RTM Company Limited | Bushey | 2024 |
| Block F Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block F1 Canford Phase 1 Management Co Limited | Tarporley | 2025 |
| Block F2 Canford Phase 1 Management Co Limited | Tarporley | 2025 |
| Block G Canford Phase 1 Management Co Limited | Tarporley | 2025 |
| Block G Freeholders Limited | Maldon | 1999 |
| Block G Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block G Primrose Gardens Management Co Limited | Tarporley | 2025 |
| Block G1B Poundbury Dorchester Management Limited | Dorchester | 2008 |
| Block H Clayton House Management Company Limited | London | 1997 |
| Block H Heatherwood (Ascot) Resident Management Company Limited | Hook | 2024 |
| Block M Management Company Limited | Canterbury | 2015 |
| Block Management Online Limited | Hertford | 2006 |
| Block Management Solutions - Client - Limited | Hove | 2023 |
| Block Management Surrey Limited | Cobham | 2026 |
| Block N (Osterley) Management Company Limited | London | 2007 |
| Block One, the Farrows (Maidstone) RTM Company Limited | Seaton | 2026 |
| Block P (Osterley) Management Company Limited | London | 2007 |
| Block P Heritage Park Limited | Croydon | 2002 |
| Block Property Management (Deal) Ltd | Deal | 2021 |
| Block T Heritage Gate Freehold Company Ltd | Croydon | 2004 |
| Block Two, the Farrows (Maidstone) RTM Company Limited | Seaton | 2026 |
| BLOCK1AFAIRFAX RTM Company Limited | London | 2026 |
| BLOCK1BFAIRFAX RTM Company Ltd | London | 2026 |
| Blockbonus Residents Management Limited | London | 1987 |
| Blockcontrol Partnership Ltd | Manchester | 2022 |
| Blockgain Resident Management Limited | London | 1986 |
| Blockhaven Property Management Limited | Bristol | 1986 |
| Blockhome Property Management Limited | London | 1986 |
| Blockhouse Residents Company Limited | Bristol | 1989 |
| Blocklong Residents Management Limited | Deal | 1988 |
| Blockmove Property Management Limited | London | 1986 |
| Blockphase Residents Management Limited | Cranbrook | 1987 |
| Blockprime Residents Management Limited | King'S Lynn | 1988 |
| Blocks 1-3 Albert Hall Mansions RTM Company Limited | London | 2011 |
| Blocks B-F Colindale Management Company Limited | Salisbury | 2015 |
| Blocks C, D and F Management Company Limited | London | 2016 |
| Blocks Management Ltd | Calne | 2022 |
| Blockshare Resident Management Limited | Monmouth | 1987 |
| Blocksolid Property Management Limited | New Milton | 1990 |
| Blockventure Resident Management Limited | London | 1987 |
| Blok Property Management Ltd | Glasgow | 2019 |
| Blomfield Amenity Limited | London | 1981 |
| Blomfield Court Maintenance Limited | London | 1982 |
| Blomfield Court Property Limited | London | 2016 |
| Blomfield House Bury ST Edmunds Limited | Bishop'S Stortford | 2020 |
| Blomfield Management Limited | London | 2011 |
| Blomfield Place Residents Management Company Limited | High Wycombe | 2022 |
| Blomfield ST Leonards Management Company Ltd | Tonbridge | 2008 |
| Bloodline Homes Ltd | Luton | 2025 |
| Bloom Holdings Limited | Wallington | 2019 |
| Bloom Property Solutions Ltd | Northampton | 2026 |
| Bloomery Way (Maresfield) Management Company Ltd | Burgess Hill | 2021 |
| Bloomfield (Leyton) RTM Company Limited | London | 2015 |