| Alex Rogers Consulting Ltd | Lymington | 2022 |
| Alex Rogers Media Ltd | London | 2025 |
| Alex Rome Limited | Darlington | 2015 |
| Alex Scotton Web Development Ltd | Norwich | 2019 |
| Alex Sewter Editorial Limited | Otley | 2015 |
| Alex Simpson Film Ltd | Watford | 2018 |
| Alex Smith Media Ltd | Southwater | 2025 |
| Alex Software Ltd | London | 2021 |
| Alex Stephen Mcdonald Ltd | Enfield | 2025 |
| Alex Stevens Design Limited | London | 2015 |
| Alex Studios 360 Limited | London | 2022 |
| Alex Summersby Limited | Bath | 2012 |
| Alex Sunderland Films Limited | Hanwell | 2015 |
| Alex T Smith Limited | Redditch | 2014 |
| Alex Thomas Consulting Limited | Caldicot | 2011 |
| Alex Townley Media Limited | London | 2023 |
| Alex Turner IT Solutions Ltd | Manchester | 2018 |
| Alex Turner Ltd | Hove | 2022 |
| Alex Usborne Limited | North Finchley | 2012 |
| Alex Vail Cinematography Ltd | Bristol | 2019 |
| Alex Viola Apps Limited | Leamington Spa | 2024 |
| Alex Watkins Consulting Limited | Tring | 2014 |
| Alex Web Ltd | London | 2018 |
| Alex Webster Productions Limited | London | 2017 |
| Alex Weeks Editing Ltd | Barnet | 2013 |
| Alex White Racing (UAE) Ltd | Winchester | 2024 |
| Alex Wilkinson Media Limited | Nottingham | 2017 |
| Alex Winter Software Ltd | Eastleigh | 2026 |
| Alex Wood Design Services Ltd | Wimborne | 2022 |
| Alex Zozovsky Narratelearning Ltd | London | 2024 |
| Alex's Kitchen Bangers Ltd | Uttoxeter | 2024 |
| ALEX08 Ltd | Hounslow | 2019 |
| Alexa Hartle Design Ltd | Manchester | 2025 |
| Alexade Solution Limited | Tilbury | 2014 |
| Alexander & Neighbour Ltd | London | 2019 |
| Alexander Bernhardt Publishing Company-Uk | Sidcup | 2015 |
| Alexander Caldwell Ltd | Nuneaton | 2015 |
| Alexander Computer Services Limited | London | 2000 |
| Alexander Consultancy Services Limited | Beaconsfield | 2015 |
| Alexander Consulting Services Ltd | Bristol | 2026 |
| Alexander Corrie Ltd | Winchester | 2011 |
| Alexander Crawford Forbes Consulting Limited | Plymouth | 2026 |
| Alexander Dimarr Enterprises Limited | London | 1994 |
| Alexander Fintch Holdings Ltd | London | 2025 |
| Alexander Gordon Smith Ltd | Norwich | 2018 |
| Alexander Gugel 2 Limited | London | 2020 |
| Alexander Hamilton Limited | Cardiff | 2014 |
| Alexander Head Media Ltd | Brentwood | 2021 |
| Alexander IT Ltd | Darlington | 2016 |
| Alexander JAY Consulting Ltd | Enfield | 2018 |
| Alexander Lewis Publishing Limited | London | 2015 |
| Alexander Marketing Ltd | Stoke-On-Trent | 2024 |
| Alexander Martin Project Management Limited | St. Asaph | 2015 |
| Alexander Maxime Limited | Colchester | 2024 |
| Alexander Michael Consulting Limited | Bolton | 2021 |
| Alexander Montgomery Limited | London | 2015 |
| Alexander Music Ltd | Hastings | 2025 |
| Alexander Parsons Music Ltd | London | 2025 |
| Alexander Perry Ltd | Lymington | 2016 |
| Alexander PHI Ltd | Birmingham | 2025 |
| Alexander Pictures Limited | Ashford | 2015 |
| Alexander Roland Giles Limited | Sunderland | 2015 |
| Alexander Ruben Ltd | Ilford | 2018 |
| Alexander Sivokhin Consulting Ltd | London | 2024 |
| Alexander Smith Ltd | Bristol | 2020 |
| Alexander T Mackay Ltd | London | 2026 |
| Alexander Tailfeather Limited | London | 2021 |
| Alexander Technology and Media Limited | Bromsgrove | 2018 |
| Alexander Telecoms Consulting Ltd | Bristol | 2017 |
| Alexander Titov Limited | London | 2023 |
| Alexander Walls Enterprise Ltd | London | 2024 |
| Alexander Wiederin Ltd | London | 2025 |
| Alexander-Aquino Group Ltd | Nottingham | 2023 |
| Alexanders Associates Limited | Swansea | 2010 |
| Alexanderson Marketing Limited | London | 2025 |
| Alexanderttrpg Ltd | Halifax | 2024 |
| Alexanderus Tech Ltd. | Brentford | 2017 |
| Alexandra Brodski Limited | Brighton | 2023 |
| Alexandra Ellen Enterprises Ltd | Manchester | 2025 |
| Alexandra Helvetica Limited | Luton | 2020 |
| Alexandra Riddell Music Limited | Aberdeen | 2025 |
| Alexandra S Consultancy Ltd | London | 2025 |
| Alexandra Stevens Ltd | Whitehills Business Park | 2017 |
| Alexandra Tech LAB Ltd | Cardiff | 2025 |
| Alexandre Ducarne Ltd | London | 2025 |
| Alexandre Pavé Ltd | Whitehills Business Park | 2016 |
| Alexandria Ashes Limited | Manchester | 2025 |
| Alexandria Investment Research & Technology UK Limited | London | 2025 |
| Alexandria Press Limited | London | 1989 |
| Alexandria Software Ltd | London | 2022 |
| Alexandria-Media Limited | London | 2022 |
| Alexandriaforpress&Printing &Publishing Limited | Berkshire | 2020 |
| Alexandrite Innovations Ltd | Sutton | 2023 |
| Alexandrite Limited | | 1998 |
| Alexandrite Software Ltd | Sutton | 2022 |
| Alexandros Stergiou Ltd. | London | 2014 |
| Alexanter Solution Ltd | London | 2024 |
| Alexanvench Global Company Limited | London | 2020 |
| Alexbarnicoat.Com Ltd | London | 2026 |
| Alexbio Entertainment Limited | London | 2019 |