| 5 Star Building Solution Ltd | Aylesbury | 2024 |
| 5 Star Civils Ltd | Saltburn-By-The-Sea | 2025 |
| 5 Star Construction Limited | Romford | 2019 |
| 5 Star Construction Services Limited | Kidderminster | 2011 |
| 5 Star Damp & Plastering Ltd | London | 2026 |
| 5 Star Decking Ltd | East Grinstead | 2022 |
| 5 Star Decorating Services Ltd | Rochdale | 2022 |
| 5 Star Development Ltd | Birmingham | 2008 |
| 5 Star Drainage Ltd | London | 2022 |
| 5 Star Driveways & Patios Limited | Luton | 2012 |
| 5 Star Driveways & Patios Specialist Ltd | St. Albans | 2024 |
| 5 Star Fibre Glass Ltd | Southsea | 2022 |
| 5 Star GAS Services Ltd | Skegness | 2016 |
| 5 Star Glazing Ltd | Uxbridge | 2015 |
| 5 Star Heating & Renewable Energy Limited | Cornwall | 2021 |
| 5 Star Heating Limited | Weybridge | 2008 |
| 5 Star Home Improvements Ltd | Uxbridge | 2023 |
| 5 Star Improvement Specialists Ltd | Bristol | 2025 |
| 5 Star Lofts London Ltd | Twickenham | 2019 |
| 5 Star Maintenance (South West) Limited | Redruth | 2005 |
| 5 Star Painters Ltd | Margate | 2023 |
| 5 Star Painting Limited | London | 2026 |
| 5 Star Plumbing & GAS Limited | London | 2017 |
| 5 Star Plumbing & Heating (Sussex) Limited | Lancing | 2019 |
| 5 Star Projects Ltd | Chisley Road | 2022 |
| 5 Star Properties (SW) Ltd | Bridgend | 2021 |
| 5 Star Re-Roofs & Building Ltd | Wednesbury | 2021 |
| 5 Star Renovations Ltd | Caterham | 2024 |
| 5 Star Roofing & Building Sussex Limited | Lewes | 2025 |
| 5 Star Roofing (London) Ltd | Luton | 2020 |
| 5 Star Roofing - Stoke on Trent Ltd | Stoke-On-Trent | 2025 |
| 5 Star Roofing and Building Ltd | Spalding | 2025 |
| 5 Star Roofing Services (UK) Limited | Coulsdon | 2013 |
| 5 Star Roofing Services Manchester Ltd | Prestwich | 2019 |
| 5 Star Scaffolding Limited | Fakenham | 2016 |
| 5 Star Sealants Limited | Ongar | 2018 |
| 5 Star Stone Work Limited | Andover | 2015 |
| 5 Star UK Roofing Ltd | Ruislip | 2025 |
| 5 Star VG Ltd | Twickenham | 2020 |
| 5 Starr Scaffolding Ltd | Stockport | 2020 |
| 5 Stars Construct Ltd | Romford | 2016 |
| 5 Stars Decorating Ltd | Salisbury | 2024 |
| 5 Stars GAS & Electric Ltd | Birmingham | 2025 |
| 5 Stars Home Limited | Morden | 2013 |
| 5 Stars Plumbing and Heating Services Limited | Harrow | 2024 |
| 5 Stars Solution Ltd | London | 2024 |
| 5 Stone Properties Ltd | Thetford | 2019 |
| 5 Towns Property Solutions Ltd | Castleford | 2015 |
| 5 Towns Roofing and Guttering Ltd | London | 2026 |
| 5 Toynbee Close Ltd | Reading | 2018 |
| 5 Trades Ltd | Liversedge | 2016 |
| 5 Valley Alarms Ltd | Stroud | 2012 |
| 5 Valley's Lifting Ltd | Stroud | 2024 |
| 5 Western Avenue Ltd | Ilford | 2023 |
| 5 Wood Construction Limited | Middlesex | 2003 |
| 5-9 City Garden ROW Limited | London | 2008 |
| 5/6 Norfolk Street Ltd | Downham Market | 2020 |
| 50 Carnwath Road Limited | London | 2013 |
| 50 Fenchurch Devco Limited | London | 2022 |
| 50 Fenchurch General Partner Limited | London | 2022 |
| 50 Hertz Ltd | York | 2013 |
| 50 Massams Lane Homes Limited | Liverpool | 2025 |
| 50 North 3 West Ltd | Torquay | 2013 |
| 50 Shades of Colour Ltd | Brighton | 2025 |
| 50 Trades of Gray Ltd | Stamford | 2022 |
| 50 Westbridge Road Limited | London | 2018 |
| 50 WR Limited | London | 2024 |
| 50-52 Calverley Road Limited | London | 2022 |
| 50-52 CR Subco Limited | London | 2025 |
| 500 Group Limited | London | 2020 |
| 500 M Limited | Leeds | 2017 |
| 500E Limited | Romford | 2021 |
| 501 Electrical Limited | Sheffield | 2022 |
| 501 Solutions Limited | Sandhurst | 2025 |
| 505 Property Maintenance Limited | Chester Le Street | 2025 |
| 5050 Developments Ltd | Meols | 2018 |
| 509 BRE Ltd | London | 2024 |
| 50FIVE Charging Solutions UK Ltd | London | 2025 |
| 50FIVE-(UK) Limited | Barnsley | 2001 |
| 50K Limited | Bournemouth | 2026 |
| 50WS Limited | Birmingham | 2018 |
| 51 Commercial Street Limited | Newport | 2021 |
| 51 Degrees Marine Limited | Bideford | 2025 |
| 51 Mill Hill Road Limited | London | 2018 |
| 51 Pegasus Limited | Hertfordshire | 1999 |
| 51 the Dean Limited | Alresford | 2018 |
| 51 William & George Ltd | Leicester | 2022 |
| 51-54 Gracechurch Street (NO.1) Limited | | 2001 |
| 51-54 Gracechurch Street (NO.2) Limited | | 2001 |
| 5103 Ltd | Swansea | 2014 |
| 515 Home Improvements Ltd | Cardiff | 2016 |
| 515-521 Barlow Moor Road Limited | Hyde | 2023 |
| 51A Palace Road Ltd | East Molesey | 2022 |
| 51F Limited | London | 2025 |
| 51M Ltd | Preston | 2026 |
| 52 Avenue Road Limited | Glossop | 2021 |
| 52-55 Albert Road Ltd | Little Hoole | 2024 |
| 52-58 Middle Street Brighton Limited | Brighton | 2020 |
| 520 Construction Limited | Dudley | 2025 |
| 525CD Limited | West Malling | 2021 |