| 3 Badgers Ltd | Woodhall Spa | 2022 |
| 3 Barnsbury Square Limited | Canterbury | 2021 |
| 3 Beach Road (Southsea) Limited | Southsea | 2004 |
| 3 Beaches SW Ltd | Langport | 2024 |
| 3 Beaconsfield Limited | Nailsea | 2019 |
| 3 Bears Investments Ltd | Hayes | 2019 |
| 3 BED House Ltd | London | 2018 |
| 3 Belsize Avenue Company Ltd | London | 2010 |
| 3 Berkeley Square Limited | Bristol | 2016 |
| 3 Bird Real Estate Limited | London | 2025 |
| 3 Birkbeck Road Management Limited | London | 1997 |
| 3 Blake Street Management Company Ltd | Taunton | 2011 |
| 3 Bloomsbury SQ Ltd | London | 2025 |
| 3 Blue - Kempshott Ltd | London | 2007 |
| 3 Blue - Wellfield Ltd | London | 2007 |
| 3 Blue-Becmead Ltd | London | 2007 |
| 3 Blue-Greyhound Ltd | London | 2007 |
| 3 Blue-Monson Ltd | London | 2007 |
| 3 Boltro Road Limited | Barnet | 2025 |
| 3 Boyz Investments Ltd | Manchester | 2020 |
| 3 Briars Close Limited | London | 2024 |
| 3 Bridges Commercial Ltd | Portsmouth | 2018 |
| 3 Bridges Residential Ltd | Portsmouth | 2018 |
| 3 Brighton Terrace Limited | Penzance | 2022 |
| 3 Bristol Gardens Management Limited | | 2002 |
| 3 Bros Property Ltd. | Belfast | 2020 |
| 3 Bruces Limited | London | 2015 |
| 3 Buckingham Place Limited | Bristol | 2001 |
| 3 Buckingham Road Brighton Limited | East Sussex | 2004 |
| 3 Burnbury Road (Freehold) Limited | Penarth | 2011 |
| 3 Burnley Road Management Company Limited | London | 2007 |
| 3 Bushy Park Bristol (Management Company) Limited | Keynsham | 2016 |
| 3 Butterflies Limited | Ashford | 2017 |
| 3 by the Sea Ltd | Lichfield | 2024 |
| 3 C'S Corporation Limited | Derby | 2001 |
| 3 Cambridge Park Management Limited | Middlesex | 1994 |
| 3 Cantelupe House Limited | Croydon | 2015 |
| 3 Cargreen Road RTM Company Ltd | London | 2017 |
| 3 Carlingford Road Limited | London | 2023 |
| 3 Castellain Road Limited | London | 2006 |
| 3 Cavendish Place Limited | Avon | 1980 |
| 3 Cawnpore Street Ltd | London | 2025 |
| 3 Chapel Terrace Ltd | Grays | 2025 |
| 3 Charlwood Place Limited | London | 2019 |
| 3 Cheezs Property Limited | Hornchurch | 2020 |
| 3 Chester Heights Ltd | St. Albans | 2023 |
| 3 Christchurch Ltd | Canterbury | 2024 |
| 3 Church Cowley Road Limited | Oxfordshire | 1999 |
| 3 Claverton Street Residents Limited | London | 1999 |
| 3 Cliff Road CO12 3PP Freehold Ltd | Harwich | 2019 |
| 3 Cliff Tech Ltd | Milton Keynes | 2021 |
| 3 Clovelly Avenue Ltd | Manchester | 2020 |
| 3 Commercial Ltd | Banstead | 2023 |
| 3 Compton ST Management Limited | Cleator Moor | 2015 |
| 3 Compton Terrace RTM Company Limited | London | 2006 |
| 3 Conduit Street Limited | London | 2026 |
| 3 Coombe Road Management Limited | Kingston Upon Thames | 2001 |
| 3 Copse Hill Management Company Limited | London | 1996 |
| 3 Cornerstone Ltd | Glasgow | 2013 |
| 3 Cornmarket Louth Limited | East Yorkshire | 2004 |
| 3 Counties Holdings Limited | Dunstable | 2017 |
| 3 Cranwood Street Property Limited | Northampton | 2024 |
| 3 Cribs Ltd | London | 2021 |
| 3 Cromwell Road Limited | Teddington | 2017 |
| 3 Crown Ltd | Bangor | 2020 |
| 3 Crowns Group Limited | Dundee | 2021 |
| 3 Cube Real Estate Limited | West Yorkshire | 2004 |
| 3 Cubs Limited | Leicester | 2020 |
| 3 Cumberland AVE Ltd | Manchester | 2021 |
| 3 D Closures Limited | Leigh-On-Sea | 2002 |
| 3 Dane Road RTM Company Limited | Birchington | 2021 |
| 3 DE Vere Gardens Limited | Manchester | 2024 |
| 3 Devonshire Villas (Bath) Limited | Bath | 2024 |
| 3 Diamonds Properties Ltd | Glasgow | 2024 |
| 3 Dimensional Publishing Limited | Croydon | 1996 |
| 3 DJB Limited | Holborn | 2022 |
| 3 DOT 8 Limited | Solihull | 2023 |
| 3 Dots Invest Ltd | London | 2022 |
| 3 Downs Road Freehold Company Limited | Stevenage | 2013 |
| 3 Dowry Place Ltd | Bristol | 2026 |
| 3 Dowry Place Residential Ltd | Bristol | 2026 |
| 3 E Investment Ltd | High Gosforth Park | 1993 |
| 3 Eggs Management Ltd | London | 2020 |
| 3 Eleven Investments Limited | London | 2025 |
| 3 Elmbourne Road RTM Company Limited | London | 2012 |
| 3 Elnathan Mews Ltd | Bradford | 2025 |
| 3 Elsworthy Rise Limited | London | 2023 |
| 3 Emperors Gate Management Company Limited | London | 2011 |
| 3 Ennismore Gardens Freehold Limited | London | 2025 |
| 3 Ermine Road Ltd | Chester | 2025 |
| 3 Estelle Road Management Limited | Haywards Heath | 1997 |
| 3 Exeter Road Management Company Ltd | London | 2003 |
| 3 Fairlawn Avenue Ltd | London | 2019 |
| 3 Farrows Limited | Greenford | 2024 |
| 3 Felpham Road Limited | Bognor Regis | 2025 |
| 3 Firs Estates Limited | London | 2019 |
| 3 Fitzhardinge House Ltd | London | 2025 |
| 3 Flats in Paddock Wood Ltd | Paddock Wood | 2017 |
| 3 Fore Street Torpoint Ltd | Torpoint | 2023 |
| 3 Fowey Limited | Cornwall | 2024 |