| Alderley Partnerships (MS) Limited | Londond | 2025 |
| Alderley Partnerships (PCF) 2 Limited | London | 2026 |
| Alderley Partnerships (POV) Limited | London | 2025 |
| Alderley Partnerships (SGP) 2 Limited | Chelsea | 2026 |
| Alderley Partnerships (SGP) Limited | Chelsea | 2025 |
| Alderman Ardivot Ltd | Elgin | 2024 |
| Alderman Build Ltd | Elgin | 2014 |
| Alderman Burnfield Ltd | Elgin | 2023 |
| Alderman Electrical Services Ltd | Bristol | 2026 |
| Alderman Estates Ltd | Elgin | 2022 |
| Alderman Roofing Limited | Northampton | 2003 |
| Alderman Stonehaven Ltd | Elgin | 2022 |
| Aldermanbury Trade Limited | Richmond | 2008 |
| Aldermans Estates (Wavendon) Limited | Hailsham | 2019 |
| Aldermans Estates Ltd | Hailsham | 2010 |
| Aldermans Place Management Company Limited | Birmingham | 2014 |
| Aldermans Property Group Ltd | Barnet | 2025 |
| Aldermead Development Ltd | Telford | 2021 |
| Aldermead Limited | Ocean Way | 2000 |
| Alderminster Custom Build Ltd | Trowbridge | 2024 |
| Alderminster Electrics Limited | Shipston | 1998 |
| Alders Electrical Services Limited | Hampshire | 2003 |
| Alders Farm (Little HAY) Limited | London | 2023 |
| Alders Plant Ltd | Cosby | 2024 |
| Alders RD Ltd | London | 2025 |
| Alders View Holdings Ltd | Crawley | 2026 |
| Aldersbrook Road Development Ltd | Buckhurst Hill | 2017 |
| Aldersheff Limited | Harpenden | 2018 |
| Alderson & Co Services Ltd | Northampton | 2025 |
| Alderson Building Company Limited | Hemel Hempstead | 2007 |
| Alderson Developments (Yorkshire) Ltd | Huddersfield | 2024 |
| Alderson Electrical Ltd | Rotherham | 2010 |
| Alderson Homes Ltd | Burnley | 2023 |
| Alderstead Construction Limited | Andover | 2025 |
| Alderstone Capital Ltd | Swindon | 2025 |
| Alderstone Homes Limited | Warrington | 2026 |
| Alderstone Investment Ltd | Harrow | 2024 |
| Alderstone Kitchens Limited | London | 2025 |
| Alderstow Ltd | Yeovil | 2012 |
| Alderten Investments Limited | Maldon | 2003 |
| Alderton Estates Limited | Dorchester | 2026 |
| Alderton Hill Developments Limited | Beckenham | 2026 |
| Alderton Properties Ltd | Andover | 2011 |
| Alderton Property Limited | London | 2020 |
| Alderton Services Limited | Billericay | 2015 |
| Alderwell BBM Ltd | Ipswich | 2024 |
| Alderwood Builders Limited | Liverpool | 2021 |
| Alderwood Property Ltd | Kettering | 2025 |
| Aldes NO1 Limited | Worcester | 2012 |
| Aldescuva Ltd | London | 2020 |
| Aldev Fire & Electrical Limited | Hornchurch | 2016 |
| Aldex Group Ltd | Erith | 2016 |
| Aldezan Limited | Blairgowrie | 2011 |
| Aldford Development Limited | London | 2024 |
| Aldgate Associates Limited | Eastbourne | 2008 |
| Aldgate Builders Limited | Northwood | 2025 |
| Aldgate Construction Company Limited | Sandy | 1996 |
| Aldgate Contracts Ltd | Ilford | 2014 |
| Aldgate E1 Limited | London | 2015 |
| Aldgate E2 Limited | London | 2021 |
| Aldgate Land One Limited | London | 2013 |
| Aldgate Manor Services Ltd | Colchester | 2017 |
| Aldgate Place (GP) Limited | London | 2011 |
| Aldgate Tower Developments Limited | London | 2011 |
| Aldham Estates Limited | Calne | 2025 |
| Aldi JD Limited | London | 2001 |
| Aldi JD Properties Limited | London | 2004 |
| Aldi Plumbing and Heating Ltd | Beckenham | 2026 |
| Aldin Investments Limited | Birmingham | 2017 |
| Aldis & MAY Ltd | Woodbridge | 2018 |
| Aldis Builders Ltd | Shipley | 2019 |
| Aldis Construction Ltd | Enfield | 2024 |
| Aldis Mechanical Ltd | West Horndon | 2026 |
| Aldis of Barking Limited | Romford | 1946 |
| Aldis-Hobbs Ltd | Chichester | 2018 |
| Aldiscarpenting Ltd | Doncaster | 2025 |
| Aldkew Limited | Milton Keynes | 2009 |
| Aldn Construction Ltd | Sutton Coldfield | 2022 |
| Aldo Construct Ltd | Wellingborough | 2022 |
| Aldo Construction Limited | Leeds | 2024 |
| Aldo General Renovations Ltd | London | 2023 |
| Aldo Investments Limited | East Sussex | 1964 |
| Aldo Plumbing & Heating Ltd | London | 2023 |
| Aldok Plumbing Services Ltd | Harrow | 2018 |
| Aldon B&C Limited | Esher | 2013 |
| Aldons and Co Building and Maintenance Ltd | Ruislip | 2022 |
| Aldor Group Limited | Barking | 2024 |
| Aldor Limited | Stanford-Le-Hope | 2018 |
| Aldoryan Developments Ltd | London | 2026 |
| Aldous Electrical Felixstowe Limited | Colchester | 2015 |
| Aldous Mechanical Ltd | Ipswich | 2023 |
| Aldous Plumbing & Heating Ltd | Norwich | 2026 |
| Aldow Enterprise Park Management Company Limited | Ashton-Under-Lyne | 1995 |
| Aldra Install Ltd | Northampton | 2022 |
| Aldrebe Constructions Limited | Cardiff | 2021 |
| Aldred and Hopkins Young Limited | Maidenhead | 2005 |
| Aldred Developments Limited | Nottingham | 2014 |
| Aldred Electrical Services Limited | Great Yarmouth | 2022 |
| Aldred GAS & Heating Services Limited | Brixham | 2020 |
| Aldreth Developments Limited | Ringwood | 2020 |