| Aldrich Developments Ltd | London | 2019 |
| Aldrich Estates Limited | Buxton | 2002 |
| Aldridge & Sons Roofing Ltd | Sunbury-On-Thames | 2010 |
| Aldridge (Electrical Contractors) Ltd | Crosby | 2005 |
| Aldridge Air Conditioning Limited | Cannock | 2013 |
| Aldridge Building Services Ltd | Cannock | 2018 |
| Aldridge Building Solutions Ltd | Wimborne | 2012 |
| Aldridge Civil Engineering Ltd | Cannock | 2019 |
| Aldridge Construction Engineering Ltd | Sutton Coldfield | 2015 |
| Aldridge Construction Services Ltd | Walsall | 2019 |
| Aldridge Contract Services Limited | Walsall | 2013 |
| Aldridge Developments Limited | Swaffham | 2015 |
| Aldridge Electrical Installations Ltd | Stroud | 2013 |
| Aldridge Electrical Limited | Tipton | 2011 |
| Aldridge Energy Electrical Contractors Limited | Saxmundham | 2016 |
| Aldridge Fireplaces Limited | Burntwood | 2020 |
| Aldridge Installations Ltd | Southampton | 2013 |
| Aldridge Landscaping Limited | Reading | 2017 |
| Aldridge Loft Conversions Limited | Sutton Coldfield | 2016 |
| Aldridge Maintenance Services Limited | Walsall | 2017 |
| Aldridge Mechanical Limited | Yeovil | 2014 |
| Aldridge Prime Limited | Walsall | 2010 |
| Aldridge Property Services Limited | Flint | 2003 |
| Aldridge Renovations Limited | Halesworth | 2026 |
| Aldridge Restoration Ltd | King'S Lynn | 2004 |
| Aldridge Windows UK Ltd | Burntwood | 2003 |
| Aldridge's Property Services Ltd | Braintree | 2023 |
| Aldro Eastbourne Limited | Leeds | 2024 |
| Aldrock Renewables Limited | Blackburn | 2023 |
| Alds London Ltd | Northampton | 2019 |
| Aldson Building Contracts Ltd | Benfleet | 2023 |
| Aldt Services Ltd | Burton-On-Trent | 2025 |
| Aldu Services Limited | Brandon | 2015 |
| Aldubai TM Ltd | Kidderminster | 2023 |
| Aldustria Ltd | Newport | 2020 |
| Aldwark Property Company Limited | York | 1987 |
| Aldwarke Developments Ltd | Sheffield | 2021 |
| Aldwick Building Company Limited | Luton | 1998 |
| Aldwick GAS Limited | Bognor Regis | 2025 |
| Aldworth Roofing Contracts Ltd | Southwick | 2007 |
| Aldwych Developments Limited | Fakenham | 2014 |
| Aldwych Estimating Services Ltd | London | 2025 |
| Aldwych Nominees Limited | London | 1989 |
| Aldwych Properties Limited | Stourbridge | 1998 |
| Aldwyck Company (Shefford) Limited | London | 2006 |
| Aldyth Construction Limited | Ballymoney | 2021 |
| Aldyv Ltd | London | 2026 |
| ALE Architectural Ltd | Borehamwood | 2017 |
| ALE Bathroom & Kitchen Limited | Epsom | 2016 |
| ALE Construction Limited | Coventry | 1998 |
| ALE Fire Systems Limited | Midhurst | 2007 |
| ALE Opportunity Ltd | Watford | 2016 |
| ALE Piling Ltd | Coventry | 2005 |
| ALE Plumbing & Heating Ltd | Harlech | 2020 |
| ALE Properties Limited | Blackburn | 2019 |
| Alea Constructions Limited | London | 2023 |
| Aleam Construction Limited | Romford | 2019 |
| Aleam Scaffolding Limited | Romford | 2020 |
| Aleat Construction Ltd | Earlsfield | 2024 |
| Aleb Services Limited | London | 2026 |
| Alec Engineering and Contracting (UK) Ltd | London | 2020 |
| Alec Hoare & SON Limited | Torquay | 2003 |
| Alec Oakley Limited | Cheshunt | 1995 |
| Alec Pattinson Limited | Preston | 2002 |
| Alec Quarton Electrical Limited | Beverley | 2012 |
| Alec Roberts Building Limited | Bethesda | 2016 |
| Alec Snell Construction Ltd | Liskeard | 2013 |
| Alecci Construction Ltd | Bristol | 2011 |
| Alech Ltd | Wellingborough | 2026 |
| Alecom Construct Limited | Harrow | 2014 |
| Alecra Limited | Hemel Hempstead | 1984 |
| Alecsf Management Services Ltd | Morden | 2020 |
| Alecssander Construction Ltd | Edgware | 2015 |
| Alect Electrical Services Limited | Ilkeston | 2017 |
| Alect Limited | Nottingham | 2025 |
| Alector Construction Ltd | London | 2021 |
| Alectra Ltd | Liverpool | 2010 |
| Alectrical (Scotland) Limited | Tayside | 2006 |
| Alectrics Limited | Cheshire | 2005 |
| Alectrifix Limited | Bradford | 2015 |
| Alectron Services Ltd | Ware | 2019 |
| Aled Construction Limited | Dunstable | 2022 |
| Aled Evans Plumbing & Heating Ltd. | Carmarthen | 2025 |
| Aled Godfrey Ltd | Lampeter | 2012 |
| Aled Jones Building Ltd | Wilmslow | 2018 |
| Aled Lewis A'I FAB Plumbing Heating & Renewables Limited | Llandeilo | 2021 |
| Aledan & Sons Limited | Manchester | 2017 |
| Aleden Contracts UK Ltd | Dungannon | 2019 |
| Aleden Ltd | Scunthorpe | 2024 |
| Aledi UK Ltd | London | 2014 |
| Aledo Holdco (UK) Limited | Littleport | 2017 |
| Alee-Works Ltd | London | 2025 |
| Aleeda Limited | Crowthorne | 2023 |
| Aleena and Aliyah Limited | Stockton-On-Tees | 2024 |
| Alef Security & Electrical Limited | Manchester | 2011 |
| Aleghiapfeiffer Ltd | London | 2025 |
| Alegian Ltd | London | 2019 |
| Alegra Limited | Carshalton | 2013 |
| Alegricom Ltd | Northampton | 2018 |
| Aleixo Group Limited | London | 2021 |