| 4 Roundstone Street (Trowbridge) Limited | Trowbridge | 2016 |
| 4 Rowland Road Management Company Limited | Dorking | 2010 |
| 4 S Group (GB) Limited | Wolverhampton | 2019 |
| 4 Saville Road Management Limited | Ealing | 1998 |
| 4 Seas Properties Limited | Sutton | 2019 |
| 4 Season Investment Limited | London | 2011 |
| 4 Seasons Apartments Limited | Coventry | 1986 |
| 4 Seasons Investments Ltd | Sutton Coldfield | 2020 |
| 4 Seasons Property Ltd | Hayes | 2023 |
| 4 Secure Self-Storage Limited | Thetford | 2014 |
| 4 Selborne Road (Hove) Limited | Southwick | 2010 |
| 4 Shakespeare Road Freehold Limited | Horley | 2008 |
| 4 Shire Property Investments Limited | Nottingham | 2021 |
| 4 Sight Properties Ltd | London | 2026 |
| 4 Sisters 14 Limited | London | 2022 |
| 4 Sisters 15 Limited | London | 2022 |
| 4 Smart Flats Limited | Plymouth | 2005 |
| 4 Smyth Road Bedminster Limited | Bristol | 1999 |
| 4 Southgate Freehold Ltd. | Cheddar | 2011 |
| 4 Southwell Gardens Limited | Potters Bar | 1989 |
| 4 Spencer Hill Limited | London | 1982 |
| 4 Sports Commercial Ltd | Liverpool | 2026 |
| 4 Springs Property Ltd | Leicester | 2021 |
| 4 Square Property Ltd. | Irvine | 2009 |
| 4 Square Walls Limited | Dollar | 2014 |
| 4 Squared Management Ltd | London | 2023 |
| 4 SRH Limited | London | 2016 |
| 4 ST Aubyns Gardens Freehold Company Limited | Hove | 2023 |
| 4 ST. Luke's Avenue Freehold Company Limited | London | 2005 |
| 4 ST. Marks Hill Surbiton Residents Association Limited | Torquay | 2003 |
| 4 ST. Michael's Gardens Limited | | 2001 |
| 4 Stapleton Hall Road Limited | London | 2015 |
| 4 Star Investments Ltd | London | 2017 |
| 4 Star Properties Investment Ltd | Sidcup | 2020 |
| 4 Station Road Lyminge Limited | Canterbury | 2025 |
| 4 Steine ST Limited | London | 2018 |
| 4 Steps Properties Ltd | London | 2008 |
| 4 Stoke Newington Road (Freehold) Company Limited | Hemel Hempstead | 2013 |
| 4 Storage Limited | London | 2018 |
| 4 Stories Family Limited | London | 2013 |
| 4 Streatley Road Limited | Stanmore | 2015 |
| 4 Sumatra Road Limited | | 2006 |
| 4 Surbiton Hill Park Limited | Surbiton | 2019 |
| 4 Sutton Lane Management Co. Ltd | London | 2019 |
| 4 Talbot Road Ltd. | London | 2003 |
| 4 TEN Limited | Hexham | 1999 |
| 4 the Chase Freehold Limited | London | 2024 |
| 4 the Greenmarket Ltd | Penzance | 2025 |
| 4 the Pulse Ltd | Slough | 2021 |
| 4 Thornton Hill Management Company Limited | Tunbridge Wells | 2004 |
| 4 Tisbury Road Management Company Limited | Lewes | 1995 |
| 4 Tomorrow Ltd | Doncaster | 2022 |
| 4 Trinity Road Management Company Limited | Newport | 2017 |
| 4 UK Properties Ltd | Egham | 2025 |
| 4 Union Street Limited | Edgware | 2024 |
| 4 Vision Property Limited | Derby | 2024 |
| 4 Wald Ltd | Biggleswade | 2004 |
| 4 Walls Agents Ltd | London | 2022 |
| 4 Walls and a Roof Ltd | Ilford | 2017 |
| 4 Walls Commercial Ltd | Cheltenham | 2026 |
| 4 Walls Drylining Ltd | London | 2018 |
| 4 Walls Inventory Services Limited | Poole | 2014 |
| 4 Walls Ventures Ltd | London | 2023 |
| 4 Wards Property Lettings Limited | Hailsham | 2022 |
| 4 Warminster Road RTM Company Limited | London | 2008 |
| 4 Wesley Management Limited | Basildon | 2021 |
| 4 West Hill Limited | London | 2022 |
| 4 Westfield Terrace Management Co Limited | Leeds | 2015 |
| 4 Witherington Road Management Company Limited | London | 2012 |
| 4 WM Reach Ltd | London | 2025 |
| 4 Woodcote Ltd | Bradford | 2018 |
| 4 Woodmansterne Road Ltd | London | 2024 |
| 4 X 4 Properties Limited | Nottingham | 2012 |
| 4 Y P Visram Ltd | Hamilton | 2023 |
| 4 YOU ALL Property Limited | Ashbourne | 2020 |
| 4&5 Management Ltd | Bristol | 2020 |
| 4,6,8,10 Margaret Road Management Co Ltd | | 1999 |
| 4-5 North Mews Limited | London | 2025 |
| 4-6 Merton High Street Freehold Limited | Worcester Park | 2024 |
| 4-6 Putney Ltd | Mildenhall | 2024 |
| 4-7 Manchester Street Residents Association Limited | London | 2004 |
| 4-7 Railway Side (Barnes) Limited | London | 2008 |
| 4-RIGHT.COM Ltd | Polegate | 2025 |
| 4-SITE Estates Ltd | Gosport | 2023 |
| 4-SITE Limited | Stockport | 2001 |
| 4-WAY Limited | Thatcham | 2002 |
| 4.1 Cymbeline House Limited | Nottingham | 2021 |
| 4/4A Old ST Andrews Mansions Limited | Harrow | 2020 |
| 4/5 Lower Mill Street Ltd | Dudley | 2023 |
| 4/6 York Avenue Management Company Limited | Gloucester | 2004 |
| 40 40 Management Company Limited | Warwick | 2006 |
| 40 Acres and a Mule Limited | Richmond | 2023 |
| 40 AM Ltd | Stanley | 2021 |
| 40 Anson Road Management Company Limited | London | 1987 |
| 40 Baldry Gardens Management Limited | | 2003 |
| 40 Bath Street Freehold Ltd | Lutterworth | 2023 |
| 40 Bathwick Street (Bath) Residents Management Limited | Somerset | 1983 |
| 40 Beechgrove GDS Ltd | Aberdeen | 2021 |
| 40 Below Ltd | Leamington Spa | 2015 |
| 40 Beresford Road Limited | London | 2002 |