| 3 Alfred Street Management Company Limited | Croydon | 1985 |
| 3 ALL Saints Road Management Company Limited | Shepton Mallet | 1975 |
| 3 Amherst Road Limited | Tunbridge Wells | 2003 |
| 3 and 4 Bramshill Mansions Limited | Dartmouth Park Hll | 1992 |
| 3 and 4 Clifton Terrace RTM Company Limited | Winchester | 2024 |
| 3 and 4 the Quay Property Management Company Limited | Truro | 2018 |
| 3 Annandale Road (Management) Limited | | 2000 |
| 3 Apsley Road (Bristol) Management Limited | Bristol | 1978 |
| 3 Ashbourne Avenue Limited | London | 2014 |
| 3 Ashburton Road Residents Company Limited | Gosport | 2007 |
| 3 Atlingworth Street Limited | Brighton | 2001 |
| 3 Avenue Road RTM Company Limited | Lichfield | 2024 |
| 3 Balfour Street Management Company Limited | Hertford | 2004 |
| 3 Barkston Gardens RTM Company Limited | London | 2012 |
| 3 Barton Road Freehold Company Limited | London | 2022 |
| 3 Barton Street RTM Company Limited | Manchester | 2022 |
| 3 Basing Street Residents Limited | | 2000 |
| 3 Bath Street (Brighton) Limited | Brighton | 2003 |
| 3 Bathurst Road RTM Company Limited | Ilford | 2022 |
| 3 Bedford Avenue Freeholders Limited | Epping | 2026 |
| 3 Belgrave Lane RTM Company Ltd | Plymouth | 2020 |
| 3 Belgrave Place Management Limited | Brighton | 1999 |
| 3 Belvedere Villas Management (Bath) Limited | Somerset | 1984 |
| 3 Benbow Road Management Limited | London | 1976 |
| 3 Bennett Street (Bath) Management Limited | Croydon | 2001 |
| 3 Berners Street Limited | London | 2006 |
| 3 Birdbush Avenue Block Management Limited | Waltham Abbey | 2008 |
| 3 Blackall Road Management Company Limited | Exeter | 2021 |
| 3 Blaker Road Manco Limited | Loughton | 2017 |
| 3 Bradiston Road Limited | London | 2020 |
| 3 Brampton Park Road (Freehold) Limited | Coventry | 2017 |
| 3 Brewster Road Management Company Limited | London | 2021 |
| 3 Bridges (London) Freehold Limited | London | 2005 |
| 3 Britannia Road RTM Company Limited | Southend-On-Sea | 2016 |
| 3 Brondespark Limited | London | 2024 |
| 3 Brunswick Place (Hove) Limited | Hove | 2004 |
| 3 Brunswick Place Management Company Limited | Bath | 2015 |
| 3 Brussels Road (Freehold) Limited | London | 2019 |
| 3 Bryanston Square Tenants Management Company Limited | Norwich | 1972 |
| 3 Bulmershe Road (2004) Limited | Crowthorne | 2004 |
| 3 Burder Road Freehold Company Limited | Broadstairs | 2012 |
| 3 Calle Palma Limited | West Sussex | 1995 |
| 3 Callow Street Management Company Limited | Birmingham | 1998 |
| 3 Calonne Road Management Limited | London | 2015 |
| 3 Campsbourne Road Limited | London | 2003 |
| 3 Cantelupe Management Ltd | Croydon | 2017 |
| 3 Carlisle Parade Management Company Limited | Maidstone | 2006 |
| 3 Castle Street RTM Company Limited | Bromsgrove | 2008 |
| 3 Castlegate Management Company Limited | Brampton | 2016 |
| 3 Catharine Street Limited | | 1997 |
| 3 Cavendish Road Management Limited | London | 2012 |
| 3 Cecile Park Management Limited | London | 2000 |
| 3 Chantry Road Management Limited | Bristol | 1989 |
| 3 Chatham Place (Brighton) Limited | Brighton | 2004 |
| 3 Chertsey Road Management Limited | Bristol | 2026 |
| 3 Chester Road Management Company Ltd. | Braintree | 2015 |
| 3 Cheyne Terrace Limited | London | 2015 |
| 3 Chine Crescent (Bournemouth) Limited | Bournemouth | 2007 |
| 3 Christchurch Road (Management) Limited | Bristol | 1983 |
| 3 Cissbury Road Management Limited | Hove | 2026 |
| 3 Claremont Crescent Management Company Limited | Weston-Super-Mare | 1983 |
| 3 Claremont Filey Management Company Limited | Filey | 2023 |
| 3 Cleveland Terrace Management Company Limited | Bideford | 1994 |
| 3 Cleveland Walk Ltd | Bath | 2014 |
| 3 Clifford Road (Bexhill) Limited | London | 2004 |
| 3 Clifton Crescent Residents Management Company Limited | Canterbury | 2020 |
| 3 Clifton Road Management Limited | London | 2018 |
| 3 Clitheroe Road Freehold Property Limited | London | 2017 |
| 3 Clyde Park Management Limited | Bristol | 1977 |
| 3 Colinette Road Limited | London | 2012 |
| 3 College Terrace (Freehold) Company Limited | Hove | 2019 |
| 3 Colleton Crescent Management Company Limited | Exeter | 2022 |
| 3 Collingham Place Limited | London | 2011 |
| 3 Comeragh Road RTM Company Ltd | London | 2014 |
| 3 Coolhurst Road Limited | London | 1984 |
| 3 Cotham Park Management Limited | Bristol | 1986 |
| 3 Countess Road Limited | London | 2017 |
| 3 Courtfield Gardens Management Limited | London | 2017 |
| 3 Crane Street Management Company Limited | Wimborne | 2015 |
| 3 Creffield Road Ltd | London | 2006 |
| 3 Cromwell Crescent Management Company Limited | London | 1988 |
| 3 Crossfield Road Ltd | Belsize Park | 2023 |
| 3 Cuppes (Sarum) Management Company Limited | Salisbury | 1988 |
| 3 Curzon Road Management Company Limited | Hoylake | 2012 |
| 3 Dagnan Road Freehold Limited | London | 2013 |
| 3 Dale Street RTM Company Limited | Manchester | 2008 |
| 3 Dancer Road Limited | London | 2022 |
| 3 Dartmouth Road Residents Association Limited | London | 1983 |
| 3 Dartmouth Terrace Limited | London | 2013 |
| 3 Degrees World Ltd | London | 2022 |
| 3 Derwent Road West Management Company Limited | Liverpool | 2004 |
| 3 Dowry Square Management Limited | Bristol | 1991 |
| 3 Drake Road Management Company Limited | Plymouth | 2005 |
| 3 Duckmoor Road Management Company Limited | Bristol | 2011 |
| 3 Eardley Crescent Limited | London | 2025 |
| 3 East Street Bromley (Management) Limited | Longfield | 2012 |
| 3 Eastfield Park Management Ltd | Weston-Super-Mare | 2024 |
| 3 Eaton Place Brighton (Residents) Limited | Brighton | 2001 |
| 3 Eaton Place Freehold Limited | London | 2018 |
| 3 Eaton Villas Hove Limited | | 2005 |