| Alkers Solicitors Ltd | Poulton-Le-Fylde | 2019 |
| Alkhaleej Islamic Cons Ltd | Manchester | 2025 |
| Alkhemy Group Ltd | Derby | 2021 |
| Alkimos Consultancy Limited | London | 2015 |
| Alkindi Medical Ltd | Maidenhead | 2021 |
| Alkira Technologies Limited | London | 2024 |
| Alkirky Services Limited | Cardiff | 2025 |
| ALKM3ST Ltd | Nottingham | 2023 |
| Alko Group Ltd | London | 2020 |
| Alko UK Limited | London | 2018 |
| Alkom Limited | Croydon | 2015 |
| Alkoomi Limited | Eastbourne | 2005 |
| Alkor UK Ltd | Edinburgh | 2023 |
| Alkron Industrial Limited | Lancashire | 1995 |
| Alkt Consultancy Ltd | Hatch End | 2016 |
| Alkuto Ltd | Nuneaton | 2019 |
| ALL & More Consulting Ltd | Slough | 2025 |
| ALL - Round Project Services Limited | Strathclyde | 1998 |
| ALL 1 Consulting Ltd | London | 2022 |
| ALL 2 Gain Limited | Hertford | 2023 |
| ALL 3 Studio Ltd | Newry | 2014 |
| ALL 4 Comms Ltd | London | 2011 |
| ALL 4 One (UK) Limited | Bromsgrove | 2008 |
| ALL 4 the Creatives Ltd | London | 2025 |
| ALL Able Ltd | Canterbury | 2019 |
| ALL Aboard Research Ltd | Halstead | 2023 |
| ALL About Accounting (UK) Limited | Fareham | 2011 |
| ALL About Accounts Limited | London | 2005 |
| ALL About Amps Ltd | Manchester | 2016 |
| ALL About Anything Ltd | Barrow-In-Furness | 2019 |
| ALL About Assets Limited | Bedford | 2015 |
| ALL About Behaviour Ltd | Faversham | 2020 |
| ALL About Brands PLC | London | 2006 |
| ALL About Business Limited | Berkhamsted | 2003 |
| ALL About Carbon Ltd | Reading | 2019 |
| ALL About Communication Limited | Chippenham | 2006 |
| ALL About Compliance Limited | London | 2023 |
| ALL About Dogs Limited | Maldon | 2011 |
| ALL About Drains Limited | Dalkeith | 2014 |
| ALL About Events Management Limited | Hitchin | 2017 |
| ALL About Framing Limited | Bucks. | 2010 |
| ALL About Helping Consulting Ltd | Epsom | 2020 |
| ALL About Holes Limited | Bridgend | 2009 |
| ALL About Images Ltd | Hoddesdon | 2025 |
| ALL About Local Magazines Ltd | Ledbury | 2010 |
| ALL About Place Ltd | Bootle | 2023 |
| ALL About Print Ltd | Havant | 2018 |
| ALL About Quality Limited | Westminster Bridge Road | 2005 |
| ALL About Results Limited | Reading | 2005 |
| ALL About Risk Limited | Broadstairs | 2019 |
| ALL About Socials Ltd | Halifax | 2025 |
| ALL About Soft Skills Limited | London | 2019 |
| ALL About Sport Limited | York | 2019 |
| ALL About Sports Events Ltd | Harrogate | 2020 |
| ALL About Success Ltd. | Bolton | 2005 |
| ALL About Talent Ltd | London | 2024 |
| ALL About the E Limited | Hove | 2021 |
| ALL About the Numbers Ltd | Hollingdon | 2023 |
| ALL About Weddings Ltd | Lees | 2011 |
| ALL About Words Ltd | Eastbourne | 2018 |
| ALL Abroad Education UK Ltd | London | 2022 |
| ALL Access Accountancy Limited | Hove | 2025 |
| ALL Access Electrical Limited | Norwich | 2008 |
| ALL Access Group Limited | Ashford | 2016 |
| ALL Access Rigging Ltd | Aberdeen | 2015 |
| ALL Accident Claims Limited | London | 2014 |
| ALL Accountancy Ltd | Liverpool | 2026 |
| ALL Accountancy Solutions Ltd | Ilford | 2012 |
| ALL Accountants Ltd. | Milton Keynes | 2019 |
| ALL Accounting Limited | New Milton | 2014 |
| ALL Accounting Solutions Ltd | London | 2010 |
| ALL Accounts Limited | West Bromwich | 2015 |
| ALL Acres Limited | Windsor | 2025 |
| ALL ADS Limited | Eastchurch | 2003 |
| ALL Advertising Ltd | Hornchurch | 2009 |
| ALL Ahead Ltd | Westhill | 2024 |
| ALL Alliance Limited | Redditch | 2008 |
| ALL Amplified Media Ltd | London | 2013 |
| ALL Angles Ltd | London | 2026 |
| ALL Animals Veterinary Clinic Ltd | Grange-Over-Sands | 2005 |
| ALL Answer Accounting Services Ltd | Cheltenham | 2022 |
| ALL Arcs Ltd | Letchworth Garden City | 2024 |
| ALL Around Design Limited | Cottingham | 2021 |
| ALL Around UK Services Ltd | London | 2022 |
| ALL Around US Ltd | London | 2022 |
| ALL Around US Studio Ltd | New Eltham | 2017 |
| ALL Artworks Limited | London | 2026 |
| ALL Aspect Media Limited | Ringwood | 2018 |
| ALL Aspects Associates Ltd | London | 2025 |
| ALL Aspects Media Limited | London | 2021 |
| ALL Aspects of Accounts Ltd | Hull | 2020 |
| ALL Aspects Signal Sighting Limited | Dorchester | 2024 |
| ALL Assist Limited | Derby | 2017 |
| ALL Automation Limited | Woburn Sands | 2020 |
| ALL Avon Limited | Bristol | 1992 |
| ALL Axis Studio Limited | Ringwood | 2021 |
| ALL Bespoke Limited | Milton Keynes | 2012 |
| ALL Black Studio Ltd | London | 2024 |
| ALL Borough Housing Limited | Station Road | 2024 |
| ALL Boxt UP Ltd | London | 2024 |