| A G Mcevoy Limited | East Ham | 2021 |
| A G P Machine Plastering Limited | Co.Down | 1997 |
| A G P Windows & Doors Limited | Manchester | 2008 |
| A G Pipeline Services Limited | Evesham | 2007 |
| A G Plastering Services Limited | Willenhall | 2020 |
| A G Plumbing & Heating N/W Limited | Cheadle | 2010 |
| A G Price Construction Limited | Carmarthen | 2015 |
| A G Procter Limited | Lancashire | 2006 |
| A G Property Works Ltd | Ramsgate | 2025 |
| A G Pullen Construction Ltd | Sidcup | 2007 |
| A G R Interiors Limited | Norfolk | 1981 |
| A G Rickett and SON Limited | Bleasby | 2002 |
| A G Rodgers Limited | Belfast | 2018 |
| A G Roofing and Building Contractors Limited | Stockport | 2018 |
| A G Rooflines Limited | Halifax | 2013 |
| A G Ross Ltd | Ullapool | 2016 |
| A G S Building Services (Taunton) Limited | Taunton | 2000 |
| A G S Heating and Plumbing Limited | Accrington | 2006 |
| A G S Noise Control Limited | Heanor | 2002 |
| A G S Plumbing Services Limited | Nottingham | 2013 |
| A G Scaffolding (Oxford) Ltd | Kidlington | 2014 |
| A G Scaffolding Services Ltd | Birmingham | 2023 |
| A G Services Ltd. | London | 2009 |
| A G Silver Limited | Stonehaven | 2016 |
| A G Solutions Limited | Chatham | 2023 |
| A G T Construction Ltd | Sutton Coldfield | 2014 |
| A G T Contracting Limited | Hornchurch | 2008 |
| A G Tilley & Sons Limited | Beauchamp | 2001 |
| A G Walton Limited | Malvern | 2006 |
| A G Wilson Limited | Craigavon | 2010 |
| A G Windows & Doors Ltd | Southall | 2024 |
| A G Z Limited | Cardiff | 2019 |
| A Gale Tiling Ltd | Lincoln | 2008 |
| A Game Heating Limited | Stockport | 2018 |
| A Garton Brickwork Ltd | Rochdale | 2021 |
| A GAS Engineer Limited | Plymouth | 2022 |
| A Geldart Brickwork Limited | Leeds | 2017 |
| A Gibson Consulting Ltd | Twickenham | 2020 |
| A Gill Services Limited | Corsham | 2023 |
| A Gillespie Joinery Limited | Strathaven | 2020 |
| A Gillett Ltd | Folkestone | 2013 |
| A Glass Plumbing Limited | Clitheroe | 2009 |
| A Glastone Limited | High Wycombe | 2017 |
| A Goddard Limited | Swindon | 2012 |
| A Godfrey Electrical Limited | Bury St Edmunds | 2006 |
| A Golden Plumbing Service Ltd | Brixham | 2011 |
| A Gollick Brickwork Ltd | Doncaster | 2025 |
| A Good Electrical Company Limited | Guildford | 2020 |
| A Good Plumber Ltd | Hampshire | 2006 |
| A Goodwill Roofing and Building Maintenance Limited | Penrith | 2010 |
| A Gordon Electrical Ltd | Mitcham | 2016 |
| A Gormley Ltd | Dungannon | 2019 |
| A Gorringe & Co Ltd | Horsham | 2026 |
| A Gough Roofing Limited | Salford | 2017 |
| A Grade Builders Ltd | Birmingham | 2017 |
| A Grade Building Solutions Ltd | Northampton | 2020 |
| A Grade Construction Limited | London | 2026 |
| A Grade Driveways Ltd | Sheffield | 2023 |
| A Grade Glazing Limited | Dagenham | 2011 |
| A Grade Groundworks Ltd | Dudley | 2018 |
| A Grade Paving & Landscaping Ltd | Chatham | 2026 |
| A Grade Plumbing & Heating Ltd | Coventry | 2003 |
| A Grade Windows Ltd | Newcastle | 2010 |
| A Graham (Scotland) Ltd | Glasgow | 2014 |
| A Grant Roofing Ltd | Cambridge | 2004 |
| A Gray Area Ltd | Kendal | 2020 |
| A Gray Plumbing & Heating Limited | Bristol | 2022 |
| A Green Carpentry and Plastering Ltd | Gillingham | 2017 |
| A Green Construction Ltd | Slough | 2019 |
| A Green Developments Ltd | Mansfield | 2015 |
| A Green Heating Ltd | Sutton | 2017 |
| A Green Heating Solutions Ltd | Delabole | 2024 |
| A Green Oak Builders Ltd | Windsor | 1997 |
| A Green Plastering Ltd | Henfield | 2017 |
| A Greener Footprint Ltd | Barnsley, South Yorkshire | 2020 |
| A Greener Place Limited | London | 2022 |
| A Greener Scotland Ltd | Glasgow | 2024 |
| A Greener UK Ltd | Halifax | 2009 |
| A Greenwood Insulation Ltd | Bradford | 2024 |
| A Gregory Building Contractors Limited | Darlington | 2012 |
| A Gregory Home Improvements Ltd | Bristol | 2019 |
| A Griffey & SON Limited | Bideford | 1989 |
| A Griffiths Decorating Limited | Ashford | 2020 |
| A Grimsey Brickwork Limited | Earls Colne | 2017 |
| A Groome Construction Ltd | Bognor Regis | 2023 |
| A Grubb Electrical Ltd | Cardiff | 2014 |
| A Gudgeon Limited | Watford | 2016 |
| A Gunn Construction Ltd | Cockermouth | 2025 |
| A H a Construction Ltd | London | 2018 |
| A H and S Roofing Limited | Skipton | 2026 |
| A H Brickwork Limited | Derby | 2015 |
| A H Builders Bradford Ltd | Bradford | 2019 |
| A H Building Constructions and Supply Limited | London | 2023 |
| A H C Building Ltd | Buckfastleigh | 2023 |
| A H Caldicott & Sons Limited | Tenbury Wells | 2015 |
| A H Carpentry & Build Limited | Chard | 2010 |
| A H Carpentry, Joinery and Construction Ltd | Hailsham | 2015 |
| A H Claydon & SON Limited | Devon | 2003 |
| A H Construction (Barnsley) Limited | Barnsley | 2012 |
| A H Construction (Holmfirth) Limited | Holmfirth | 2020 |