| Alde Electrical Services Ltd | Saxmundham | 2017 |
| Alde Restoration & Construction Limited | Saxmundham | 2019 |
| Aldeburgh Construction Ltd | Saxmundham | 2024 |
| Aldeby 2016 Ltd | Leicester | 2016 |
| Aldeby Painting Services Co. Limited | Leicester | 1975 |
| Aldec Decorators Ltd | Manchester | 2009 |
| Aldec Ltd | Blackburn | 2010 |
| Aldeco Limited | Swansea | 2018 |
| Aldeko Construction Ltd | London | 2024 |
| Aldeko Ltd | London | 2025 |
| Aldeli Limited | London | 2024 |
| Alden Construction Group Limited | Harrow | 2021 |
| Alden Electrical Limited | Leicestershire | 2007 |
| Alden Holmes Investments Limited | Sittingbourne | 2009 |
| Alden Solar Energy Solutions Ltd | Market Harborough | 2022 |
| Alden Ventilation Limited | Dunstable | 2018 |
| Aldene Developments Limited | Sheffield | 2015 |
| Aldenham Ventures Limited | London | 2020 |
| Aldens Plumbing & Heating Ltd | Benfleet | 2024 |
| Alder (Management Services) Limited | Portsmouth | 1978 |
| Alder and Arch Ltd | London | 2026 |
| Alder and ASH Limited | Epsom | 2025 |
| Alder Community Housing C.I.C. | Brighton & Hove | 2019 |
| Alder Construction Solutions Ltd | Kettering | 2025 |
| Alder Design and Construction Ltd | Rickmansworth | 2025 |
| Alder Electrical Ltd | Cumnor | 2022 |
| Alder Electrical Services Ltd | Guildford | 2020 |
| Alder Electrics UK Limited | Bootle | 2009 |
| Alder Grove Chilworth Management Company Limited | Dorking | 2018 |
| Alder HEY (Special Purpose Vehicle) Limited | Swanley | 2013 |
| Alder HEY Road Ltd | Bolton | 2021 |
| Alder Homes Limited | Maidstone | 2016 |
| Alder Joinery Contractors Ltd | Huddersfield | 2024 |
| Alder Oak Limited | London | 2015 |
| Alder Preece Limited | Ross On Wye | 2017 |
| Alder Projects Limited | Braco | 2001 |
| Alder Roofing Contractors Limited | Weybridge | 2009 |
| Alder Screeding Limited | London | 2009 |
| Alder Specialist Building Surveyors Limited | Inverness | 2011 |
| Alder Specialist Joinery Ltd | Huddersfield | 2022 |
| Alder Tree Construction Limited | London | 2023 |
| Alder Ventures Ltd | London | 2025 |
| Alder Way 1 Ltd | London | 2025 |
| Alder's Electrical Limited | Wantage | 2023 |
| Alderaan Electrical Services Ltd | Wolverhampton | 2018 |
| Alderash Limited | Teddington | 2015 |
| Alderbank Contractors Limited | Ayr | 2002 |
| Alderbank Joinery Ltd | Hawick | 2016 |
| Alderbridge Construction & Services Ltd | London | 2025 |
| Alderbrook Homes Limited | Redhill | 2011 |
| Alderbrook Ltd | London | 2014 |
| Alderbrook Management BVI - Keyworker Limited | Warrington | 2023 |
| Alderbrook Properties (Birmingham) Limited | Birmingham | 1951 |
| Aldercape Ltd | Fareham | 2025 |
| Alderclad Ltd | Co Durham | 2005 |
| Alderco Ltd | Ross-On-Wye | 2025 |
| Aldercrest Compliance Group Ltd | London | 2026 |
| Alderdice Project Management Ltd | Caldicot | 2025 |
| Alderdice Properties Limited | Carrickfergus | 2007 |
| Alderfields Carpentry & Building Ltd | Westerfield | 2025 |
| Alderford Limited | York | 2026 |
| Aldergate Developments Limited | Nottingham | 1992 |
| Aldergate Estates Limited | Nottingham | 1992 |
| Aldergate Land Limited | Nottingham | 1993 |
| Aldergrove Contracts Limited | Crumlin | 2024 |
| Alderholt Leadworks Ltd | Fordingbridge | 2021 |
| Alderleigh Acoustics Ltd | Clitheroe | 2020 |
| Alderley 1 GB Limited | Manchester | 2016 |
| Alderley Capital (PCF) 2 Limited | London | 2026 |
| Alderley Capital (SGP) 2 Limited | Chelsea | 2026 |
| Alderley Capital (SGP) Limited | Chelsea | 2025 |
| Alderley Developments (2019) Limited | Chelsea | 2022 |
| Alderley Developments (Macclesfield) Ltd | Chelsea | 2024 |
| Alderley Edge (Cheshire) Holdings Limited | Wilmslow | 2026 |
| Alderley Edge Developments Ltd | Hyde | 2014 |
| Alderley Edge Electrical Services Ltd | Alderley Edge | 2018 |
| Alderley Edge Windows and Doors Limited | Alderley Edge | 2012 |
| Alderley Group (2019) Limited | London | 2019 |
| Alderley Group (PCF) 2 Limited | London | 2026 |
| Alderley Group (SGP) 2 Limited | Chelsea | 2026 |
| Alderley Group (SGP) Limited | Chelsea | 2025 |
| Alderley Haus Building Co. Ltd | Alderley Edge | 2024 |
| Alderley Homes (Cheadle) Limited | Chelsea | 2025 |
| Alderley Homes (Glossop) Limited | Chelsea | 2024 |
| Alderley Homes (Helmshore) Limited | London | 2025 |
| Alderley Homes (Langho) Limited | Chelsea | 2024 |
| Alderley Homes (Levens) Limited | Chealsea | 2025 |
| Alderley Homes (Nantwich) Limited | London | 2026 |
| Alderley Homes (Neston) Limited | London | 2026 |
| Alderley Homes (PCF) 2 Limited | London | 2026 |
| Alderley Homes (Poplars) Limited | London | 2026 |
| Alderley Homes (SGP) 2 Limited | Chelsea | 2026 |
| Alderley Homes (SGP) Limited | Chelsea | 2025 |
| Alderley Homes AMC Limited | London | 2025 |
| Alderley Homes England Limited | Chelsea | 2024 |
| Alderley Land (2019) Limited | Chelsea | 2022 |
| Alderley Oaks Developments Ltd | Leicester | 2021 |
| Alderley Partnerships (2019) Limited | Chelsea | 2019 |
| Alderley Partnerships (AMC) Limited | Chelsea | 2025 |
| Alderley Partnerships (MR) Limited | London | 2025 |