| 50 Vere Road RTE Company Limited | Macclesfield | 2006 |
| 50 West Hill Street Limited | East Sussex | 2003 |
| 50 Westminster Way (Oxford) Limited | Oxfordshire | 2004 |
| 50 Woodstock Road Property Management Company Limited | | 1993 |
| 50 Yorkhouse RTM Company Limited | Bristol | 2018 |
| 50-51 Cleveland Square Management Limited | Fareham | 1996 |
| 50-51 Properties Limited | London | 2008 |
| 50-52 Warriner Gardens Limited | London | 2016 |
| 50-60 Essendine Mansions Freehold Limited | Woodford Green | 2010 |
| 50-60 Station Road Tenant Limited | London | 2018 |
| 50/50 Consulting Ltd | London | 2018 |
| 50/50A Sandringham Road Ltd | Cardiff | 2018 |
| 50/51 Bateman Street Freehold Limited | Cambridge | 2009 |
| 500 Greek Street Limited | London | 2021 |
| 500 Haverstock Hill Limited | Ilford | 2021 |
| 500 Investments Limited | Slough | 2024 |
| 500 London Limited | Ilford | 2021 |
| 500 Longwater (UK) Limited | London | 2019 |
| 500 Ltd | Birmingham | 2024 |
| 500 MD Ltd | Chesterfield | 2023 |
| 500 Notting Hill Gate Limited | Ilford | 2020 |
| 500 Portobello Road Limited | Ilford | 2020 |
| 500 Properties Limited | Thatcham | 2025 |
| 500 White Hart Lane Management Company Limited | Ely | 2018 |
| 500KEEN Investments Ltd | Southend-On-Sea | 2025 |
| 501 Estates Limited | Nantwich | 2018 |
| 501 My Property Ltd | Aberdeen | 2023 |
| 502 Jerome House Limited | Harrow | 2025 |
| 503 Avenir House Limited | London | 2023 |
| 503 KR Limited | London | 2021 |
| 505 Property Limited | Stockport | 2020 |
| 505 Shapered Market Limited | London | 2026 |
| 5051 Property Holdings Ltd | Eastleigh | 2020 |
| 5058 Property Limited | Newcastle Upon Tyne | 2016 |
| 506 Assets Limited | Beckenham | 2025 |
| 506 Old Chester Road Management Company Limited | Bolton | 2006 |
| 506/508 Brighton Road Freehold Limited | South Croydon | 2017 |
| 507 Northern Quarter Limited | Wolverhampton | 2025 |
| 508 Fulham Road Management Co Ltd | | 1996 |
| 509 Ltd | Dumfries | 2024 |
| 50A Developments York Ltd | London | 2016 |
| 50A Firs Lane Limited | London | 2018 |
| 50A Whitton Limited | London | 2026 |
| 50B Firs Lane Limited | London | 2019 |
| 50BSCW Service Charge Limited | London | 2017 |
| 50BY50PROPERTIES Limited | Hemel Hempstead | 2018 |
| 50C Firs Lane Limited | London | 2020 |
| 50EOR Ltd | Juniper Green | 2023 |
| 50K Holdings Ltd | Shrewsbury | 2023 |
| 50PS Opco Limited | Bristol | 2019 |
| 51 Abbey Road Limited | Great Marlings | 1997 |
| 51 Avenue Ltd | London | 2023 |
| 51 Barry Road Management Company Limited | London | 1995 |
| 51 Belsize Park (Freehold) Limited | Watford | 2003 |
| 51 Bergen Ltd | London | 2018 |
| 51 BOB International Ltd | Leicester | 2019 |
| 51 Bounds Green Road Management Limited | London | 2010 |
| 51 Braidley Road Limited | Bournemouth | 2008 |
| 51 Buckland Crescent (Freehold) Limited | London | 2006 |
| 51 Cadogan Gardens RTM Company Limited | London | 2014 |
| 51 Cadogan Square Freehold Limited | Sale | 2008 |
| 51 Cambeys RD Ltd | Ilford | 2026 |
| 51 Carleton Road Limited | London | 2011 |
| 51 Castle Street Limited | St. Albans | 2014 |
| 51 Central Hill (Freehold) Limited | London | 2015 |
| 51 CH Ltd | London | 2025 |
| 51 Church Street Flat Management Company Limited | Chorleywood | 1986 |
| 51 Coleridge Street (Hove) Limited | Brighton | 2020 |
| 51 Coningham Road Limited | London | 2003 |
| 51 CS Limited | London | 2026 |
| 51 Degrees North Property Limited | Putney | 2022 |
| 51 Draycott Place Freehold Ltd | London | 2021 |
| 51 Eastcheap Tenant Limited | London | 2015 |
| 51 Estates Ltd | Leicester | 2019 |
| 51 Ferntower Road Limited | London | 2007 |
| 51 Finsbury Limited | London | 2013 |
| 51 Fontarabia Road (Management) Limited | | 2000 |
| 51 Gloucester Street Limited | London | 1988 |
| 51 Grovelands Road Limited | London | 2006 |
| 51 Harvard Road Management Company Limited | Isleworth | 2004 |
| 51 Haven Road Management Company Limited | Fordinbridge | 2013 |
| 51 Heatherburn Court Ltd | Darlington | 2026 |
| 51 Heathland Ltd | London | 2026 |
| 51 High Street Langford Freehold Limited | Welwyn | 2016 |
| 51 High Street Ltd | Ilford | 2023 |
| 51 High Street South Ltd | Romford | 2025 |
| 51 Highbury Hill Limited | London | 2006 |
| 51 Holland Park Residents Limited | Pitsea | 1999 |
| 51 Hormead Road Properties Ltd | London | 2011 |
| 51 Hova Villas (Hove) Limited | Hove | 2000 |
| 51 Killyon Road Limited | London | 2015 |
| 51 Lady Margaret Road Limited | London | 1996 |
| 51 Lampton Road Ltd | London | 2018 |
| 51 Lennox Gardens Limited | Kingston Upon Thames | 1996 |
| 51 Lonsdale Road Southend RTM Company Limited | Coventry | 2011 |
| 51 Mardle Limited | Norwich | 2017 |
| 51 North Property Group Ltd | London | 2021 |
| 51 Northwold Road Management Limited | London | 2017 |
| 51 Oakdale Road (RTM) Company Limited | London | 2020 |
| 51 Ormeley Road Management Company Limited | | 2000 |