| Alacrita Consulting Limited | London | 2016 |
| Alacrita Holdings Limited | London | 2016 |
| Alacritas Consultancy Limited | Leicestershire | 2002 |
| Alacritas Engineering Limited | London | 2025 |
| Alacrity Accountancy Limited | Leicester | 2003 |
| Alacrity Aviation Limited | Weymouth | 2017 |
| Alacrity Consultancy Ltd | Reading | 2022 |
| Alacrity Consulting Ltd | Sevenoaks | 2021 |
| Alacrity Law Limited | London | 2017 |
| Alacrity Legal Services Limited | Warwick | 2019 |
| Alacrity Limited | Beverley | 2014 |
| Alacrity Maintenance Solutions Ltd | Alnwick | 2023 |
| Alacrity Project Consultants Limited | Ampthill | 2017 |
| Alacrity Solutions Group Limited | Cwmbran | 2024 |
| Aladdin Management Solutions Limited | London | 2016 |
| Aladdin Middle East (UK) Limited | Eastbourne | 2018 |
| Aladdin Sales & Marketing Limited | Shipston-On-Stour | 1998 |
| Aladdin Separation Technologies Ltd | Benfleet | 2020 |
| Aladekoyi Consulting Limited | Kettering | 2025 |
| Aladindesign Limited | Chilwell | 2019 |
| Aladinma CIC | Doncaster | 2025 |
| Alaedin Travel Ltd | London | 2022 |
| Alaf Ltd | London | 2021 |
| Alafia Therapy Ltd | London | 2022 |
| Alafin Limited | Bournemouth | 2026 |
| Alaga Limited | Surrey | 1996 |
| Alaga Solicitors Ltd | London | 2020 |
| Alagha Law Firm Limited | Birmingham | 2025 |
| Alagos Engineering Limited | Wetherby | 2008 |
| Alagoz Consultancy Limited | London | 2018 |
| Alags ( U.K. ) Limited | Romford | 2002 |
| Alaia Collective Limited | Cardiff | 2020 |
| Alaia Legal Ltd | Manchester | 2026 |
| Alain & Compagnie Limited | London | 2025 |
| Alain Bollack Consulting Limited | London | 2023 |
| Alain Consultants Ltd | Luton | 2024 |
| Alain Engineering Services Ltd | Watford | 2023 |
| Alain K Ltd | London | 2021 |
| Alain Raynaud International Limited | Lower Road Chorleywood | 1999 |
| Alaina Crystal Ltd | Broadstairs | 2022 |
| Alaina Group Ltd | Dundee | 2026 |
| Alakai Advisors Ltd | London | 2021 |
| Alakai Ltd | Ossett | 2020 |
| Alalas Consulting Limited | Milton Keynes | 2023 |
| Alalifuk Ltd | London | 2025 |
| Alam & Company Practice Ltd | London | 2025 |
| Alam Accountancy Services Ltd | Wallasey | 2017 |
| Alam Advisory Ltd | London | 2026 |
| Alam and Alam Limited | Cardiff | 2012 |
| Alam Bookkeeping Limited | Watford | 2023 |
| Alam Consultants Limited | Potters Bar | 2017 |
| Alam Consulting Limited | Welwyn | 2019 |
| Alam Financial Consulting Limited | Ilford | 2015 |
| Alam Law Ltd | Halifax | 2017 |
| Alam Validation Services Limited | Birmingham | 2016 |
| Alam&Co Ltd | Slough | 2021 |
| Alamad Limited | Aberdeen | 2011 |
| Alamak Limited | London | 2022 |
| Alamar Architects Ltd | Great Warley | 2015 |
| Alamar Waste Management Ltd | Bury St. Edmunds | 2014 |
| Alamata Ltd | London | 2025 |
| Alambe Financial Services Limited | Usk | 2023 |
| Alambell Limited | Pontefract | 2002 |
| Alambret Communication Ltd | London | 2022 |
| Alamcinematics Ltd | Nottingham | 2025 |
| Alamco Limited | London | 2013 |
| Alamdar Consultants Limited | Aberdeen | 2021 |
| Alamdc Ltd | Wilmslow | 2024 |
| Alameda Advisory Limited | Rayleigh | 2026 |
| Alameda Consultants Limited | Deal | 2024 |
| Alameda Software Ltd | London | 2025 |
| Alameda Solutions Ltd | Angmering | 2023 |
| Alamelu Consulting Limited | London | 2022 |
| Alamer Yachting Limited | London | 2025 |
| Alamgir Consultancy Ltd | Hull | 2010 |
| Alamillo Ltd | Poole | 2021 |
| Alamin Consulting Ltd | Glasgow | 2025 |
| Alamin Media Ltd | Cambridge | 2019 |
| Alamin Trade Ltd | Edgware | 2025 |
| Alammy Ltd | London | 2024 |
| Alamo Design Limited | Leeds | 2015 |
| Alamo Energy Ltd | York | 2025 |
| Alamo Group Europe Limited | Evesham | 1991 |
| Alamo International Limited | London | 2022 |
| Alamo Investment Inc. Ltd. | London | 2015 |
| Alamo Monitoring Limited | Plymouth | 2014 |
| Alamo Nominee Limited | London | 2021 |
| Alamo Projects Limited | York | 2019 |
| Alamo Security Services Limited | Bolton | 1994 |
| Alamode Photographers Limited | Bradford | 2004 |
| Alamoire Efun Global Enterprise UK Ltd | Oldbury | 2020 |
| Alamshar UK Limited | London | 2013 |
| Alamu Planning & Design Limited | Belvedere | 2018 |
| Alamy Limited | London | 1999 |
| Alan a. Griffin Associates UK Limited | Fareham | 1995 |
| Alan Accountancy Ltd | Ruislip | 2014 |
| Alan Agency Limited | London | 2021 |
| Alan Alger Ltd | Hitchin | 2023 |
| Alan Alun Alan Ltd | Cardiff | 2020 |
| Alan B Jones and Associates Limited | Milton Keynes | 2009 |