| 14 South Island Place Limited | | 1985 |
| 14 Southside (Weston Super Mare) Management Company Limited | N Somerset | 1988 |
| 14 ST Luke's Avenue Limited | London | 2003 |
| 14 Stars Agency Limited | Birmingham | 2024 |
| 14 Stars Engineering Consultancy Ltd | London | 2022 |
| 14 Sydney Street Freehold Limited | London | 2005 |
| 14 Twenty Consulting Ltd | Coventry | 2021 |
| 14 Widcombe Parade (Bath) Limited | Bath | 1988 |
| 14-20 Orville Road (Battersea) Limited | Dorking | 1996 |
| 140 Park Lane (2005) Limited | London | 2005 |
| 140 Springfield Road Brighton Limited | Brighton | 1997 |
| 140 Wightman Road London N8 Limited | | 2005 |
| 1400S Ltd | Hungerford | 2018 |
| 1403 Advisors Limited | Hertford | 2025 |
| 1404 Performance Limited | Colchester | 2017 |
| 1405 Consulting Ltd | Manchester | 2025 |
| 141 FPR Limited | London | 2013 |
| 141/145 Lyme Farm Road Management Limited | London | 1998 |
| 1411 Limited | Sheffield | 2026 |
| 141221 Limited | Evesham | 2026 |
| 1415 Industries Ltd | London | 2025 |
| 142-152 Long Lane Limited | London | 2014 |
| 142217 Ltd | Liverpool | 2019 |
| 142MG Ltd | Sawbridgeworth | 2021 |
| 143 Iverson Road Management Company Limited | | 2006 |
| 143 Upper Brockley Road Management Company Limited | | 2002 |
| 143/145 Station Road Liss Management Company Limited | Liss | 2000 |
| 14381855 Ltd | Bedford | 2022 |
| 144 Above Town Management Company Ltd | Dartmouth | 2012 |
| 144 Queens Park Road RTM Company Limited | Hove | 2023 |
| 1440 Consultancy Ltd | London | 2025 |
| 1440 Consulting Limited | Mansfield | 2023 |
| 1440 Design Ltd | Belfast | 2014 |
| 1440 Healthcare Analytics Ltd | Croydon | 2025 |
| 1440 Sports Management Limited | London | 2018 |
| 144C Limited | Ripon | 2023 |
| 145 Redland Road Management Limited | Bristol | 1985 |
| 146 Taxis Ltd. | Edinburgh | 2015 |
| 14624 Limited | Porthcawl | 2000 |
| 147 Design Limited | Northallerton | 2002 |
| 147 Engineering Consultants Ltd | Warrington | 2007 |
| 1471 Ltd | Stafford | 2024 |
| 1473 Media Limited | London | 2022 |
| 148 Clifton Road Management Company Limited | Shefford | 2007 |
| 1485 Ltd | Leeds | 2019 |
| 148FIVE Ventures Limited | Hinckley | 2023 |
| 1492 Ventures Ltd | London | 2025 |
| 1494 Consultants Ltd | Weybridge | 2018 |
| 1494 Group Limited | London | 2024 |
| 14997173 Ltd | Leicester | 2023 |
| 149ENG Ltd | Nottingham | 2023 |
| 14:46 Consulting Ltd | Glasgow | 2020 |
| 14A & 14B Northbrook Road Limited | London | 2005 |
| 14A Accountancy Limited | Wetherby | 2023 |
| 14A Ltd | London | 2001 |
| 14ALL Services Ltd | Ellon | 2023 |
| 14D Marketing Ltd | Birmingham | 2024 |
| 14ELEVEN Consultancy Ltd | East Boldon | 2021 |
| 14FASHION Group Ltd | London | 2025 |
| 14HQ Projects Ltd | London | 2022 |
| 14IT Ltd | London | 2023 |
| 14KR Ltd | Dungannon | 2024 |
| 14OHFOUR Limited | London | 2018 |
| 14RENDER Ltd | London | 2026 |
| 14TH Degree Azimuth Advisory Limited | London | 2025 |
| 15 Cambridge Park (Twickenham) Management Company Limited | Twickenham | 1986 |
| 15 Church Road Limited | Walton | 2008 |
| 15 ES Nominee (Holdings) Limited | London | 2015 |
| 15 ES Nominee Limited | London | 2015 |
| 15 Fitzjohn's Avenue Limited | London | 1966 |
| 15 HQ Limited | London | 2024 |
| 15 Inch Tongue Moth Ltd | Canterbury | 2020 |
| 15 Jenny Wren Management Company Ltd | Droitwich Spa | 2023 |
| 15 KSR Limited | | 1992 |
| 15 Lenton Avenue Management Co. Limited | Nottingham | 1991 |
| 15 LHG Limited | London | 1990 |
| 15 Louvaine Road Limited | Brighton | 2005 |
| 15 Minute Mind Limited | Manchester | 2023 |
| 15 Minutes Limited | Brockley | 2006 |
| 15 North Ltd | Teddington | 2016 |
| 15 North Management Limited | Belfast | 2022 |
| 15 Percy Road Freehold Limited | London | 2008 |
| 15 Portman Square Management Company Limited | London | 1987 |
| 15 Rutland Gate RTM Company Limited | Stanmore | 2006 |
| 15 Spital Square Residents Association Ltd | Worthing | 1987 |
| 15 ST. Julian's Farm Road Limited | London | 2002 |
| 15 Stanley Crescent Limited | | 1979 |
| 15 Step Music Ltd | Banbury | 2024 |
| 15 the Firs Interiors Limited | Aylesbury | 2021 |
| 15 the Park Freehold Limited | London | 2025 |
| 15 Tower Terrace Limited | London | 2010 |
| 15 Trinity Square Management Company Ltd | Croydon | 2014 |
| 15 Vicarage Crescent London Limited | London | 2013 |
| 15-21 Sovereign Quarter Right to Manage Limited | Newport | 2011 |
| 15/16 SS Limited | London | 2025 |
| 150 Taxis Ltd. | Edinburgh | 2000 |
| 150-152 Ramsden Road Management Company Limited | London | 2009 |
| 1505 Engineering Ltd | Amersham | 2019 |
| 1505 Management Ltd | Saffron Walden | 2023 |
| 1507 Management Ltd | Thornton Heath | 2025 |