| A Star Access Ltd | Callington | 2022 |
| A Star Bathrooms Limited | Basildon | 2019 |
| A Star Build Limited | Bolton | 2019 |
| A Star Builder Ltd | Derby | 2023 |
| A Star Builders & Maintenance Ltd | Hertford | 2017 |
| A Star Builders Merchant Ltd | London | 2026 |
| A Star Building and Decorating Ltd | St. Leonards-On-Sea | 2019 |
| A Star Building Contractors Limited | Burntwood | 2018 |
| A Star Construction Group Limited | Leighton Buzzard | 2018 |
| A Star Construction Limited | Swindon | 2008 |
| A Star Contractors Ltd | Oldbury | 2016 |
| A Star Decorators Limited | Poole | 2015 |
| A Star Drainage Ltd | Manchester | 2025 |
| A Star Electrical Contractors Ltd | Colchester | 2019 |
| A Star Electrical Services London Ltd | Ilford | 2023 |
| A Star Electrics Ltd | Ossett | 2025 |
| A Star Flooring Limited | Rochester | 2012 |
| A Star GAS and Heating Limited | Leicester | 2017 |
| A Star GAS Solutions Ltd | Walsall | 2025 |
| A Star Glass Repairs Ltd | Bedford | 2026 |
| A Star Glazing Ltd | High Wycombe | 2022 |
| A Star Groundworks Limited | Hull | 2015 |
| A Star Heating and Plumbing Ltd | London | 2026 |
| A Star Home & Commercial Building Limited | Burntwood | 2023 |
| A Star Home Improvements (Portsmouth) Limited | Portsmouth | 2021 |
| A Star Improvements Ltd | Edgware | 2020 |
| A Star Installations Ltd | Shildon | 2024 |
| A Star Joinery Services Ltd | Bolton | 2019 |
| A Star Kitchens and Bathrooms Ltd | London | 2013 |
| A Star Lofts & Extensions Ltd | Leigh-On-Sea | 2018 |
| A Star London Scaffolding Limited | London | 2019 |
| A Star Maintenance Contractors Limited | Hythe | 2016 |
| A Star Mechanical Ltd | Stroud | 2022 |
| A Star OP Co Limited | Doncaster | 2025 |
| A Star P&D/Handyman Services Ltd | Derby | 2025 |
| A Star Painting and Decorating Ltd | Didcot | 2007 |
| A Star Plumbing Ltd | London | 2020 |
| A Star Property Improvement Limited | Sidcup | 2022 |
| A Star Reno Ltd | Southampton | 2024 |
| A Star Renovation Services Ltd | Poole | 2018 |
| A Star Renovators Limited | South Croydon | 2012 |
| A Star Roofing (WM) Ltd | Bedworth | 2021 |
| A Star Roofing and Maintenance Limited | Bristol | 2023 |
| A Star Roofing Services Ltd | Romford | 2025 |
| A Star Roofing Specialists & Property Maintenance Ltd | Worksop | 2018 |
| A Star Roofing, Fascias & Guttering Ltd | Manchester | 2024 |
| A Star Scaffolding (Yorkshire) Limited | Wetherby | 2024 |
| A Star Scaffolding Ltd | Darlington | 2012 |
| A Star Scaffolding Southern Limited | West Sussex | 2007 |
| A Star Sealants Limited | Halstead | 2019 |
| A Star Solutions Group Ltd | Plymouth | 2021 |
| A Star Windows & Bifolds Doors Limited | Thornton Heath | 2020 |
| A Starr Builders Ltd | Newhaven | 2025 |
| A Stars (UK) Development Ltd | Croydon | 2024 |
| A Stars Group Ltd | London | 2021 |
| A Starz Creations Ltd | Stoke On Trent | 2024 |
| A Statham Electrical Limited | Old Hackney Lane | 2015 |
| A Steel Building Limited | Solihull | 2015 |
| A Stellar Consultancy Limited | Leigh On Sea | 2022 |
| A Stelling Building Contractors Limited | Wetherby | 2017 |
| A Stelling Building Contractors SPV1 Limited | Wetherby | 2026 |
| A Stenning Roofing Limited | Etchingham | 2012 |
| A Step Above Roofing and Building Ltd | Leeds | 2023 |
| A Step Above Roofing Services Ltd | Leeds | 2020 |
| A Step Properties Ltd | Milton Keynes | 2026 |
| A Sterling Developments Ltd | Portsmouth | 2026 |
| A Stevens Building & Maintenance Ltd | Radstock | 2004 |
| A Stevens Engineering Ltd | Clacton-On-Sea | 2019 |
| A Stevens Plant Hire Ltd | Wimborne | 2015 |
| A Stevens Roofing Limited | Crowborough | 2022 |
| A Stevens Roofing Services Limited | Crowborough | 2022 |
| A Stevens Services Limited | Crowborough | 2024 |
| A Stevens the Roofers Limited | Crowborough | 2022 |
| A Stevenson Builders Limited | Birchington | 2007 |
| A Stevenson Electrical Ltd | London | 2015 |
| A Stewart GAS Services Ltd | Ashby-De-La-Zouch | 2026 |
| A Storey Roofing Contractor Ltd | Workington | 2013 |
| A Storry Joinery Limited | Fauldhouse | 2012 |
| A Stubley Limited | Bradford | 2004 |
| A Studio Bruce Limited | Oxford | 2024 |
| A Sturgess Decorators Limited | Northampton | 2014 |
| A Style Roofing and Property Maintenance Limited | Wirral | 2017 |
| A Summersgill (Plumbing and Heating) Ltd | West Yorkshire | 1997 |
| A Sutcliffe Development Ltd | Oldham | 2024 |
| A Sutherland Ltd | Wick | 2022 |
| A Sutton Roofing Limited | Ravenstone | 2004 |
| A Swanwick Electrical Ltd | Nottingham | 2018 |
| A Sweeney Construction Ltd | Aberaeron | 2015 |
| A Swift Builders Limited | Sheffield | 2013 |
| A System Ltd | London | 2014 |
| A T (Northampton) Limited | Northampton | 2025 |
| A T 5 Carpentry Limited | Waterlooville | 2021 |
| A T Aitken & SON Limited | Workington | 2015 |
| A T Architecture Limited | Penzance | 2014 |
| A T Brickwork (London) Limited | London | 2023 |
| A T Brickwork Limited | Nuneaton | 2024 |
| A T Build Ltd | Lincoln | 2021 |
| A T Building & Maintenance Services Ltd | Melton Mowbray | 2012 |
| A T Carpentry Ltd | Hatfield | 2010 |
| A T Contracting & Plant Hire Ltd | Lutterworth | 2012 |