| Alexander Rodway Building Contractors Limited | Peterborough | 2017 |
| Alexander Roofing UK Limited | Ashford | 2004 |
| Alexander Scaffolding Limited | Banstead | 2025 |
| Alexander Simpson Kitchens Ltd | Kirkcaldy | 2022 |
| Alexander Sinclair (N.E.) Limited | Billingham | 1989 |
| Alexander Site Engineering Limited | St. Helens | 2016 |
| Alexander Swancott Ltd | Alcester | 2025 |
| Alexander Systems Limited | High Wycombe | 2001 |
| Alexander Thomas Developments Ltd | Swindon | 2006 |
| Alexander Thomson Plumbers Limited | Dunfermline | 2024 |
| Alexander Tiling Ltd | Barking | 2024 |
| Alexander Wood Flooring Ltd | Hemel Hempstead | 2022 |
| Alexander Zane Projects Ltd | Coventry | 2009 |
| Alexander's Business Club Limited | Burton-On-Trent | 2009 |
| Alexander's Carpentry Ltd | London | 2015 |
| Alexander-Fse Limited | Castle Donington | 2026 |
| Alexanderkarl Ltd | Farnham | 2019 |
| Alexandermacbeth.Com Ltd | Johnstone | 2013 |
| Alexanders Developments Ltd | Ripponden | 2018 |
| Alexanders Homes Limited | Cheadle | 2015 |
| Alexanders Plumbing & Heating Ltd | London | 2023 |
| Alexanders Rail Limited | Margate | 2019 |
| Alexanders' Property Development Limited | Cheltenham | 2022 |
| Alexandoor Limited | Lybster | 2025 |
| Alexandr Star Ltd | Newmarket | 2023 |
| Alexandra Autos Ltd | Glasgow | 2023 |
| Alexandra Builders Limited | Stockton-On-Tees | 2003 |
| Alexandra Court Development Ltd | Egham | 2020 |
| Alexandra Decorator Ltd | Harrow | 2017 |
| Alexandra Developments Limited | Wallington | 2017 |
| Alexandra Heating Services Limited | Salisbury | 2007 |
| Alexandra Hill Developments Ltd | Lisburn | 2024 |
| Alexandra House (Southampton) Limited | Basingstoke | 2014 |
| Alexandra House Properties Limited | Watford | 2020 |
| Alexandra Mews Management (Coventry) Ltd | Coventry | 2011 |
| Alexandra Park Development One Ltd | Belfast | 2018 |
| Alexandra Park Lane Business Enterprise Limited | Sutton Coldfield | 2024 |
| Alexandra Park Limited | Leeds | 2021 |
| Alexandra Properties (NW) Limited | Liverpool | 2002 |
| Alexandra Property Limited | London | 1987 |
| Alexandra Road Development Limited | Liverpool | 2026 |
| Alexandra Road Property Management Ltd | Prenton | 2022 |
| Alexandra Roofing Ltd | Wallsend | 2014 |
| Alexandra Rose Building Service Ltd | London | 2022 |
| Alexandra Rose Construction Ltd | Birmingham | 2022 |
| Alexandra Terrace Real Estate Limited | Northampton | 2022 |
| Alexandra UK Developments Limited | Nottingham | 2021 |
| Alexandra UK Services Limited | Barking | 2017 |
| Alexandra Williams Commercial and Residential Estates Ltd | Chelmsford | 2024 |
| Alexandra Williams Group Limited | Cardiff | 2019 |
| Alexandra's Place Ltd | London | 2014 |
| ALEXANDRA2023 Ltd | Stevenage | 2025 |
| Alexandrao Ltd | Harrow | 2025 |
| Alexandre Bat-Heg Limited | Oldham | 2023 |
| Alexandre Developments Limited | Hitchin | 1998 |
| Alexandre Ltd | Basingstoke | 2022 |
| Alexandria Developments Ltd | Poole | 2018 |
| Alexandria Gardens Limited | East Grinstead | 2019 |
| Alexandrite Developments Ltd | London | 2018 |
| Alexandros Group Limited | Windsor | 2018 |
| Alexandrov Construction Services Limited | Gravesend | 2022 |
| Alexandru Bogdan Filipciuc Ltd | London | 2025 |
| Alexandru Buildings Ltd | London | 2018 |
| Alexandru Dudunica Ltd | London | 2024 |
| Alexandru Eduard Ltd | Woking | 2025 |
| Alexandru Gabriel Services Ltd | Newport Pagnell | 2025 |
| Alexandru Iordachita Ltd | London | 2016 |
| Alexandru Refurbishment Limited | London | 2017 |
| Alexandru Services Limited | Edgware | 2016 |
| Alexandru Stefan Services Limited | Northampton | 2016 |
| Alexandru Voiculescu Ltd | Sudbury Town | 2019 |
| Alexandru&Aylin Ltd | London | 2025 |
| Alexandru-Ionut Neagu 2 Ltd | London | 2025 |
| Alexandru-Ionut Neagu Ltd | London | 2025 |
| Alexandru.Pop Ltd | London | 2019 |
| Alexb Construction Ltd | Edgware | 2025 |
| Alexbest Construction Ltd | London | 2018 |
| Alexbrico Limited | Birmingham | 2025 |
| Alexbuildsuk Ltd | London | 2025 |
| Alexc Limited | Harlow | 2017 |
| Alexci Dryliners Limited | South Ockendon | 2020 |
| Alexcontrators Ltd | Northampton | 2024 |
| Alexd Civils Engineering Ltd | Motherwell | 2025 |
| Alexdar Formwork Limited | Romford | 2015 |
| ALEXDECORATION1 Limited | London | 2018 |
| Alexdstef Ltd | London | 2020 |
| Alexe Construction Ltd | London | 2019 |
| Alexe Plumbing Ltd | Edgware | 2025 |
| Alexei Chetrusca Ltd | Uxbridge | 2016 |
| Alexei Contractors Ltd | London | 2019 |
| Alexeiconstruct Limited | Barnsley | 2019 |
| Alexeve Access Ltd | Kirkcaldy | 2025 |
| Alexez Limited | London | 2023 |
| Alexfitz Ltd | Romford | 2019 |
| Alexfix Limited | London | 2020 |
| Alexi Construction Limited | London | 2023 |
| Alexi Taylor Homes Limited | Ware | 2016 |
| Alexia Estates Management Limited | Luton | 2010 |
| Alexia Group Ltd | Maidstone | 2015 |
| Alexian Homes Limited | Essex | 2007 |