| A F Read Limited | Birmingham | 2024 |
| A F Richard Housing Ltd | Trowbridge | 2025 |
| A F Robertson Ltd | Ipswich | 2013 |
| A F Roofing Ltd | Portsmouth | 2021 |
| A F Services N.I. Ltd | Belfast | 2025 |
| A F Surfacing & Groundworks Ltd | Ilkeston | 2021 |
| A F Thomas Ltd | London | 2026 |
| A F Utilities Ltd | Chester Le Street | 2015 |
| A F Vali Limited | Norwich | 2015 |
| A F Vernon Building Construction Limited | Saffron Walden | 2002 |
| A F W Plastering Ltd | Norwich | 2012 |
| A Facade Solutions Limited | South Woodford | 2013 |
| A Facades Ltd | London | 2023 |
| A Farrar Construction Ltd | Stockport | 2021 |
| A Faulkner Formwork Services Ltd | Co Derry | 2004 |
| A Feetenby Building & Joinery Ltd | York | 2020 |
| A Fine Line Limited | Swansea | 2004 |
| A Finer Finish Ltd | Penarth | 2025 |
| A Finn Roofing Ltd | Manchester | 2023 |
| A Fire Solutions Ltd | Bristol | 2025 |
| A Firm Hand Ltd | London | 2025 |
| A Fletcher and Sons Limited | Southampton | 2004 |
| A Fletcher Plumbing and Heating Ltd | Llangollen | 2025 |
| A Flora Bespoke Builds Limited | Arkley | 2018 |
| A Florea Ltd | Stevenage | 2018 |
| A Flowers Decorators Ltd | Hull | 2025 |
| A Fogg Ltd | Lincoln | 2025 |
| A Ford Limited | Ely | 2013 |
| A Ford Roofing Limited | London | 2025 |
| A Foster Building Contractor Ltd | Fareham | 2016 |
| A Foster Electrical Ltd | Leicester | 2014 |
| A Fothergill Home Improvements Ltd | Waterlooville | 2021 |
| A Fowler Carpentry & Construction Ltd | Chippenham | 2020 |
| A Fowler Electrical Ltd | Southport | 2006 |
| A Fowler Property Services Limited | Doncaster | 2020 |
| A FOX Plastering Limited | Shrewsbury | 2003 |
| A Freed Building Services Limited | Basildon | 2016 |
| A Freeman Carpentry & Construction Ltd | Saffron Walden | 2011 |
| A Freeman Electrical Installations Limited | West Malling | 2008 |
| A French Group Ltd | London | 2025 |
| A Fresh Look Ltd | Blackburn | 2010 |
| A FRY Plumbing & Heating Limited | Taunton | 2019 |
| A Full House Ltd | Morpeth | 2021 |
| A Fullard Limited | Swanland | 2002 |
| A Fulthorpe Ltd | Whitley Bay | 2006 |
| A Furniss GAS Services Ltd | Beverley | 2010 |
| A Future Investments (Kent) Limited | Dartford | 2018 |
| A G & G Interiors Ltd | Romford | 2012 |
| A G 13 Interiors Ltd | Nottingham | 2017 |
| A G a Services Limited | Kent | 1997 |
| A G Akermo & Sons Ltd | Cupar | 2014 |
| A G B Electrical Solutions Limited | Nelson | 2013 |
| A G B Renewables Ltd | Tewkesbury | 2012 |
| A G Baker Ceramics Ltd | Sheerness | 2016 |
| A G Boniface & Sons Limited | Tewkesbury | 2002 |
| A G Building Improvements Limited | Telford | 2022 |
| A G Building Services (South West) Limited | Bristol | 2002 |
| A G Building Solutions Ltd | Bishop Auckland | 2023 |
| A G C Electrical (Midlands) Ltd | Tamworth | 2017 |
| A G C Property Services Limited | Waterlooville | 2017 |
| A G Cameron Joinery Limited | Argyll | 2003 |
| A G Carpentry Southern Limited | Waterlooville | 2018 |
| A G Chambers Construction Limited | Walsall | 1997 |
| A G Chetwyn Plastering Limited | Derby | 2017 |
| A G Clark Build Ltd | Doncaster | 2012 |
| A G Construction (Tilehurst) Ltd | Reading | 2016 |
| A G Contracts & Sons Ltd | Hoddesdon | 2014 |
| A G Creek Limited | Bedford | 2006 |
| A G Cruickshank & Sons Limited | Wantage | 2002 |
| A G Decorating Limited | Wolverhampton | 2007 |
| A G Developments (Solent) Limited | Waterlooville | 2007 |
| A G Developments 1979 Limited | Cardiff | 2003 |
| A G E Plumbing & Heating Ltd | Liverpool | 2012 |
| A G Electrical (Cambridge) Contractors Ltd | Cambridge | 2006 |
| A G Electrical Installation Services Ltd | Barnsley | 2009 |
| A G Electrical NW Ltd | Preston | 2023 |
| A G Excavations Ltd | Otley | 2021 |
| A G Feakins Ltd | Gloucester | 2018 |
| A G Fleming Construction Limited | Aberdeen | 2008 |
| A G Flooring Limited | Manchester | 1992 |
| A G Freezing and Cooling Ltd | Kettering | 2018 |
| A G GAS & Plumbing Services Ltd | Chesterfield | 2025 |
| A G Grossi Limited | Brackley | 2006 |
| A G Groundworks Limited | Lingfield | 2019 |
| A G H Building Services Limited | Leigh On Sea | 2016 |
| A G H Contract Services Limited | Whitchurch | 2004 |
| A G H Electrical Limited | Bolton | 2004 |
| A G H Metals Limited | St. Albans | 2025 |
| A G Heating Installations Limited | Petersfield | 2014 |
| A G Herbert Limited | Hornchurch | 2007 |
| A G Herriott Site Services Limited | Penarth | 1994 |
| A G Joinery & Plumbing Ltd | Leeds | 2024 |
| A G Kerr Limited | Woking | 2021 |
| A G Landscaping Services Ltd | Ipswich | 2017 |
| A G Leaves Building Services Limited | Waterlooville | 2014 |
| A G M Building & Construction Ltd | Manchester | 2021 |
| A G M Joinery Services Limited | Whitley Bay | 2011 |
| A G M Lofts Ltd | Manchester | 2020 |
| A G M Plumbing and Heating Services Ltd | Seaham | 2017 |
| A G Mcbride Brickwork and General Building Limited | Chichester | 2004 |