| 3 Petals Properties Ltd | Chester | 2025 |
| 3 Pier West Ltd | Ballymoney | 2023 |
| 3 Places Ltd | Lichfield | 2025 |
| 3 Planks Property Ltd | Herne Bay | 2014 |
| 3 Point Management Limited | Perth | 2013 |
| 3 Point Property Block Management Ltd | Stowmarket | 2020 |
| 3 Pont Street Limited | London | 2009 |
| 3 Poplar Grove Limited | Birmingham | 2022 |
| 3 Preston Ltd | London | 2022 |
| 3 Properties Holdings Ltd | London | 2021 |
| 3 Property NE Lettings & Management Limited | Gateshead | 2023 |
| 3 Property NE Ltd | Gateshead | 2023 |
| 3 R Lettings Limited | Ilford | 2005 |
| 3 R'S & W Property Solutions Ltd | Wolverhampton | 2025 |
| 3 Randolph Road Limited | Epsom | 2013 |
| 3 Rascals Limited | Rye | 2015 |
| 3 Ravens Developments Ltd | Penarth | 2025 |
| 3 Reds (Property Management) Limited | Chester Le Street | 2023 |
| 3 Rivers Property Holdings Limited | London | 2021 |
| 3 Riverside Wharf Ltd | West Sussex, Littlehampton | 2024 |
| 3 Roseleigh Avenue Limited | | 2006 |
| 3 RSN (UK) Limited | Luton | 2020 |
| 3 Rutford Road Ltd | Portsmouth | 2024 |
| 3 S Investing Limited | Tunbridge Wells | 2016 |
| 3 Saints Property Limited | Bishop Auckland | 2023 |
| 3 Savile ROW Limited | London | 2006 |
| 3 Seafield Road Limited | London | 2012 |
| 3 Seed Investments Limited | Uxbridge | 2020 |
| 3 Seymer Place Limited | London | 2016 |
| 3 Shahs Ltd | Nelson | 2022 |
| 3 Ships Properties Limited | Pontefract | 2019 |
| 3 Shires Property Management Ltd | Stockport | 2021 |
| 3 Shoes LS Ltd | Barnet | 2022 |
| 3 Sigma AYR Ltd | Hamilton | 2023 |
| 3 Sisters Housing Ltd | Birmingham | 2020 |
| 3 Sisters Living Ltd | Manchester | 2026 |
| 3 Sisters Properties Limited | Wolverhampton | 2021 |
| 3 Sisters Property Group Limited | High Heaton | 2019 |
| 3 Sisters Support Services Ltd | Ilford | 2025 |
| 3 Sixteen Properties Ltd | London | 2025 |
| 3 Sixty Horizon Ltd | Hayes | 2025 |
| 3 South Villas (Camden NW1) Management Company Limited | London | 2001 |
| 3 Spencer Parade Limited | Northampton | 2022 |
| 3 Spires Development Ltd | Birmingham | 2024 |
| 3 Squared Management Ltd | London | 2021 |
| 3 Squeeze Holdings Limited | London | 2019 |
| 3 ST Anne's Road Eastbourne Limited | St. Leonards-On-Sea | 2013 |
| 3 ST Boniface Gardens RTM Company Limited | Burnley | 2014 |
| 3 ST Georges Road Ltd | London | 2019 |
| 3 Stanhope Gate (Freehold) Limited | Huddersfield | 2006 |
| 3 Star Investments Limited | Eastcote, Pinner | 2020 |
| 3 Star Property Comfort Limited | London | 2021 |
| 3 Star Property Limited | West Bromwich | 2020 |
| 3 Stars Investment Ltd | London | 2017 |
| 3 Station Road Amersham Ltd | Amersham | 2021 |
| 3 Stonehedge Limited | Ivybridge | 2024 |
| 3 Storeys Residential Ltd | London | 2023 |
| 3 Stratton House Limited | Croydon | 2025 |
| 3 Sunderland Terrace Limited | London | 2005 |
| 3 T'S Darby Limited | Sandbach | 2021 |
| 3 Teignmouth Gardens Limited | Harrow | 2020 |
| 3 the Crescent Limited | Taunton | 2017 |
| 3 the Green Ltd | London | 2019 |
| 3 the Island Management Co Ltd | Bath | 2013 |
| 3 the Uplands Limited | St Leonards | 2002 |
| 3 Tivoli Place Limited | London | 2026 |
| 3 to 3 Zero Zero Ltd | Upminster | 2019 |
| 3 to 5 Canfield Gardens Limited | Watford | 2012 |
| 3 Together Properties Ltd | Cleethorpes | 2025 |
| 3 Torland Drive Ltd | Kingston Upon Thames | 2014 |
| 3 Trojans Developments Ltd | Cardiff | 2023 |
| 3 Tudor Road RTM Company Ltd | London | 2009 |
| 3 Under Properties Limited | Leeds | 2016 |
| 3 Upper Brook Street Freehold Company Limited | London | 2025 |
| 3 Upper Oldfield Park Limited | Bristol | 1989 |
| 3 V Enterprises Limited | Amersham | 2010 |
| 3 Valiant Close Ltd | Liverpool | 2026 |
| 3 Vardens Road Limited | London | 1996 |
| 3 Vicarage Ltd | London | 2026 |
| 3 Visitors Ltd | Hamilton | 2022 |
| 3 Warrington Road Ltd | Harrow | 2015 |
| 3 Warwick Avenue Management Company Limited | Bedford | 1990 |
| 3 Waterhouse Square Tenant Limited | London | 2015 |
| 3 Way Properties Limited | Newport | 2016 |
| 3 Week Sale Limited | East Sussex | 2006 |
| 3 Well House Ltd | Croydon | 2019 |
| 3 WIN Group Limited | Long Eaton | 2018 |
| 3 WIN Investor Limited | Long Eaton | 2012 |
| 3 Wix's Lane Freehold Limited | London | 2001 |
| 3 Womersley Road Limited | | 2002 |
| 3 Woodcote Fold Ltd | Manchester | 2018 |
| 3 Wordsworth Road Limited | Bromley | 2005 |
| 3 Wray Crescent Limited | | 1996 |
| 3 Yates Estates Ltd | Lytham St Annes | 2014 |
| 3 Years Ahead Ltd | London | 2022 |
| 3 ZZZ Ltd | Ipswich | 2025 |
| 3, 5 & 7 Clarence Street Management Co Ltd | Richmond | 1999 |
| 3-10 Loakes Court Limited | Buckinghamshire | 2000 |
| 3-17 the Mall Ealing Limited | London | 2000 |
| 3-27 Wilcox Road Limited | London | 2023 |