| 3 Manley Road Management Company Limited | Liverpool | 2013 |
| 3 Manor Park Management Limited | London | 2016 |
| 3 Manstone Road London Limited | London | 2014 |
| 3 Marlborough Buildings Bath Ltd | Bath | 2011 |
| 3 Maze Hill RTM Company Limited | Bexhill-On-Sea | 2025 |
| 3 Medina Villas Hove Limited | Hove | 1996 |
| 3 Melrose Place Management Company Limited | Bristol | 2019 |
| 3 Melville Road Management Company Limited | Bristol | 1984 |
| 3 Merchant Square Management Limited | London | 2011 |
| 3 Meridian Road Management Company Limited | Bristol | 1976 |
| 3 Miles Road (Clifton) Management Co. Limited | Sevenoaks | 1979 |
| 3 Moatcroft Road (Eastbourne) Limited | Eastbourne | 2006 |
| 3 Monmouth Place Management Limited | Bath | 1984 |
| 3 Montagu Square RTM Company Limited | London | 2009 |
| 3 Montpelier (Bath) Limited | Bath | 2006 |
| 3 Montpelier Weston-Super-Mare Management Limited | Avon | 1989 |
| 3 Moreton Place Limited | London | 2012 |
| 3 Mornington Crescent (Freehold) Limited | London | 2020 |
| 3 Mount Sion (Tunbridge Wells) Management Company Limited | Tunbridge Wells | 2007 |
| 3 Mowbray Road Limited | Golders Green | 1997 |
| 3 Musgrove Road Management Ltd | London | 2016 |
| 3 Nascot Street Limited | London | 2023 |
| 3 Netherford Road Court Limited | | 2001 |
| 3 Nicholson Place (Rottingdean) Freehold Limited | Brighton | 2026 |
| 3 Norfolk Road RTM Company Limited | London | 2006 |
| 3 Norfolk Terrace (Brighton) Limited | Shoreham-By-Sea | 2007 |
| 3 North Common Road Management Limited | London | 2001 |
| 3 North Street (Tavistock) Management Company Limited | Bude | 2002 |
| 3 North Way Limited | Bicester | 2008 |
| 3 Northcote Road Management Company Limited | Bristol | 1999 |
| 3 Northlands Street Limited | London | 1997 |
| 3 Oakfield ST Freehold Ltd | Ventnor | 2025 |
| 3 Oakland Road Management Co. Limited | Redland | 1977 |
| 3 Oakley Gardens Limited | London | 2017 |
| 3 Oakley Street Limited | London | 2022 |
| 3 Oglander Road Limited | London | 2023 |
| 3 Osborne Road Management Company Limited | Bristol | 1997 |
| 3 Palmeira Avenue Residents Association Limited | East Sussex | 1996 |
| 3 Palmerston Road Management Company (Liverpool) Limited | Liverpool | 2008 |
| 3 Park Crescent Management Ltd | Leeds | 2023 |
| 3 Park Hill Management Company Limited | Stamford | 2025 |
| 3 Park Lane Management Company Limited | Bath | 2026 |
| 3 Park Road (Freehold) Limited | London | 2022 |
| 3 Park Road Limited | Billingham | 2007 |
| 3 Park View (Maintenance) Limited | Harrogate | 1984 |
| 3 Park Villas Roundhay Limited | Darlington | 2003 |
| 3 Pelham Crescent Freehold Company Limited | Hastings | 2020 |
| 3 Pembridge Crescent Limited | London | 1991 |
| 3 Pembroke Road (BS8) Limited | Bristol | 1988 |
| 3 Pembury Road Freehold Ltd | Westcliff On Sea | 2008 |
| 3 PEN CEI Management Company Limited | Aberaeron | 2020 |
| 3 Penn Road RTM Company Limited | London | 2026 |
| 3 Peterborough Villas (Fulham) Management Company Limited | London | 2017 |
| 3 Philbeach Gardens Limited | Hoddesdon | 2012 |
| 3 Pictor Drive RTM Company Limited | Margate | 2024 |
| 3 Pillar Property Ltd | London | 2018 |
| 3 Pine Gardens Limited | Horley | 2008 |
| 3 Pinnocks Way Botley Limited | Oxford | 2009 |
| 3 Point Property Management Limited | Stowmarket | 2013 |
| 3 Pond Road Residents Management Co. Limited | Rochester | 1983 |
| 3 Portland Terrace RTM Company Limited | Hampshire | 2004 |
| 3 Powis Square Limited | Brighton | 2000 |
| 3 Prestonville Road Residents Association Limited | Brighton | 1995 |
| 3 Primrose Gardens Management Company Limited | London | 2006 |
| 3 Probyn Road RTM Company Limited | London | 2007 |
| 3 Properties Limited | Swanage | 2009 |
| 3 Prospect Road Limited | Tunbridge Wells | 2022 |
| 3 Prospero Road Freehold Limited | London | 2025 |
| 3 Prospero Road RTM Company Limited | London | 2010 |
| 3 Pylle Hill Crescent Management Company Limited | Bristol | 2004 |
| 3 QPL Limited | Bletchingley | 2000 |
| 3 Qrtw Property Maintenance Company Ltd | Tunbridge Wells | 2018 |
| 3 Queen's Gate RTM Company Limited | London | 2005 |
| 3 Queens Avenue Management Limited | Bristol | 1990 |
| 3 Queens Gate Property Management Company Limited | Plymouth | 2001 |
| 3 Queens Parade Management Co. Limited | Radstock | 1977 |
| 3 Queens Road Worthing Limited | Hove | 2011 |
| 3 Queens Square Brighton Management Limited | Brighton | 1996 |
| 3 Radford Road (Freehold) Limited | London | 2007 |
| 3 Radipole Road (Management) Limited | London | 1984 |
| 3 Randall Road Management Limited | Bristol | 1982 |
| 3 Redcliffe Square Limited | London | 1997 |
| 3 Rgfh Company Limited | London | 1995 |
| 3 Richford Street Limited | London | 2012 |
| 3 Richmond Hill Avenue Management Limited | Bristol | 1983 |
| 3 River Terrace (Henley) Limited | London | 2005 |
| 3 Rochester Gardens Hove Limited | East Sussex | 2007 |
| 3 Rochfort Place Bath Limited | Croydon | 1987 |
| 3 Roland Gardens (Management Company) Limited | London | 2021 |
| 3 Rosecroft Avenue Limited | London | 2001 |
| 3 Roundhill Crescent Freehold Limited | Brighton | 2023 |
| 3 Royal Avenue Management Company Limited | Scarborough | 2011 |
| 3 Russell Hill RTM Company Ltd | Romsey | 2026 |
| 3 Rutland Gate Limited | London | 1983 |
| 3 S.T. Limited | Littlehampton | 1987 |
| 3 Sandwell Crescent Limited | London | 1995 |
| 3 Sausages Ltd | King'S Lynn | 2020 |
| 3 School Road Limited | Bristol | 2017 |
| 3 Second Avenue (Hove) Limited | Hove | 2006 |
| 3 Sevington Street Limited | London | 2000 |