| 3 Sinclair Gardens Limited | London | 2003 |
| 3 Sisters Rentals Limited | Kelty | 2022 |
| 3 Sloane Avenue, London SW3 Limited | | 2001 |
| 3 Southdene Limited | Ossett | 2013 |
| 3 ST Andrews Square Ltd | Surrey | 2004 |
| 3 ST Augustine's Road RTM Company Limited | Ramsgate | 2006 |
| 3 ST Charles Square RTM Company Limited | London | 2004 |
| 3 ST Helen's Parade Management Company Limited | Fareham | 2007 |
| 3 ST Mary Road (Freehold) Limited | London | 2023 |
| 3 ST Mary's Terrace Limited | London | 1995 |
| 3 ST Saviours Road London Limited | | 2004 |
| 3 ST Thomas Road Management Company Limited | Newquay | 2026 |
| 3 ST. Ann's Crescent Limited | London | 1995 |
| 3 ST. James' Road Limited | Kent | 1998 |
| 3 ST. Lukes Avenue Limited | Camberley | 2015 |
| 3 Stanbridge Road Management Limited | | 2000 |
| 3 Stanley Place Chester Management Company Limited | Chester | 1994 |
| 3 Stanley Road Limited | Margate | 2023 |
| 3 Stanway Road (Headington) Management Company Limited | Kidlington | 2006 |
| 3 Star Properties Ltd | Manchester | 2018 |
| 3 Station Road (Okehampton) Limited | Okehampton | 2023 |
| 3 Station Road Twickenham Limited | London | 2025 |
| 3 Steine Street (Freehold) Company Limited | Brighton | 2019 |
| 3 Step Properties Ltd | Chester | 2019 |
| 3 Sticks Housing Ltd | London | 2026 |
| 3 Stillness Road Management Company Limited | Croydon | 2014 |
| 3 Stonor Road Management Company Limited | London | 2008 |
| 3 Stormont Road Holdings Limited | London | 2017 |
| 3 Stramongate Ltd | Kendal | 2023 |
| 3 Strangways Terrace Management Company Limited | Truro | 2001 |
| 3 Strathmore Gardens Limited | Stanmore | 2005 |
| 3 Stromness Road Ltd | Leigh On Sea | 2014 |
| 3 Sudeley Terrace (Brighton) Limited | Brighton | 2006 |
| 3 Suffolk Square Management Company Limited | Cheltenham | 1992 |
| 3 Sulgrave Road Limited | London | 2023 |
| 3 Sunningfields Crescent RTM Company Ltd | London | 2017 |
| 3 Sussex Square Management Company Limited | | 2001 |
| 3 Sydenham Road Cotham Management Company Limited | Bristol | 1989 |
| 3 the Close Freehold Limited | London | 2023 |
| 3 the Halve Management Company Limited | Frome | 1999 |
| 3 the Lawn Limited | St Leonards-On-Sea | 2004 |
| 3 Third Avenue (Hove) Limited | Brighton | 2011 |
| 3 Thornton Hill Management Limited | London | 2022 |
| 3 to 4 Station Bridge RTM Company Limited | Thirsk | 2020 |
| 3 Upper Northgate Street Residents Management Company Limited | Wirral | 2003 |
| 3 Valmar Road Freehold Company Limited | London | 2015 |
| 3 Veronica RD RTM Co Ltd | London | 2018 |
| 3 Victoria Park RTM Company Limited | Epsom | 2017 |
| 3 Victoria Road Management Company Limited | London | 2024 |
| 3 Victoria Square Management Limited | Bristol | 1983 |
| 3 Vyvyan Terrace (Clifton) Residents Management Limited | Bristol | 1989 |
| 3 Walcot Parade Limited | Nottingham | 1992 |
| 3 Walcot Terrace (Bath) Limited | Croydon | 1984 |
| 3 Waldegrave Road Freehold Limited | London | 2021 |
| 3 Warren Edge Road Management Company Limited | Wimborne | 2008 |
| 3 Warwick Road Limited | London | 1998 |
| 3 Warwick Road, (Redland) Management Co. Limited | London | 1986 |
| 3 Wavertree Road RTM Company Limited | Ticehurst | 2020 |
| 3 Welbeck Street Limited | London | 1986 |
| 3 Wellington Road RTM Company Limited | Seaton | 2011 |
| 3 Wellington Terrace (the Esplanade) Management Company Limited | Folkestone | 2020 |
| 3 West Mall, Clifton (Management) Limited | Bristol | 1986 |
| 3 West Park Limited | Cleckheaton | 1989 |
| 3 West Street Management Co Ltd | Aylesbury | 2008 |
| 3 Westbourne Crescent Freehold Limited | London | 2013 |
| 3 Westfield Avenue Property Management Limited | Newcastle Upon Tyne | 2023 |
| 3 Westgate Terrace Management Limited | London | 1990 |
| 3 Westmoreland Road Management Company Limited | Bristol | 1992 |
| 3 Wetherby Gardens Limited | London | 1983 |
| 3 Wetherell Place (Management Company) Limited | | 1987 |
| 3 White Hart Lane N22 Ltd | London | 2018 |
| 3 Whitehall (Stroud) Management Company Limited | Sudbury | 2020 |
| 3 Whitworth Road Freehold Limited | London | 2021 |
| 3 Widcombe Terrace (Bath) Limited | Bath | 1977 |
| 3 Windmill Drive (Freehold) Ltd | London | 2014 |
| 3 Woolstone Road Management Services Limited | London | 2013 |
| 3 Worlingham Road Freehold Limited | London | 2009 |
| 3 WTR Freehold Limited | London | 2017 |
| 3 Wyndham Street West Plymouth Management Company Limited | Devon | 2004 |
| 3 York Place Clifton (Management) Limited | Bristol | 1992 |
| 3 York Road RTM Company Ltd | London | 2015 |
| 3 Zetland Road Limited | Hyde | 2008 |
| 3&5 ST Georges Square Freehold Limited | London | 2013 |
| 3, 4 & 5 Blomfield Road Limited | London | 1989 |
| 3, 4 & 5 the Fairways Service Management Ltd | Bury St. Edmunds | 2020 |
| 3, 4, 5 Beaufort Yard Residents Limited | Farnham | 2019 |
| 3, 5 and 7 Ainger Road Limited | London | 2000 |
| 3, 5 and 7 Triumphal Crescent Management Company Limited | Plymouth | 2017 |
| 3, Apsley Villas Maintenance Limited | Bristol | 1975 |
| 3, Cambridge Place Management (Bath) Limited | Richmond | 1976 |
| 3, Camden Crescent Residents Association Limited | Croydon | 1975 |
| 3, Claremont Gardens (Surbiton) Limited | Surbiton | 1979 |
| 3, Royal Crescent (Bath) Properties Limited | Bath | 1972 |
| 3,HURLE Road Maintenance Limited | | 1967 |
| 3-11 Beaumaris Green Company Limited | Harrow | 2006 |
| 3-11 Brooklands Road Limited | Weybridge | 2015 |
| 3-13 (Odds) Marigold Drive RTM Company Limited | Sittingbourne | 2016 |
| 3-15 Oriel Drive RTM Company Ltd | Street | 2017 |
| 3-4 Airlie Gardens Freehold Limited | Hampton | 2006 |
| 3-4 Barley Court RTM Company Limited | High Wycombe | 2017 |