| Aliquantum Limited | Poole | 2012 |
| Aliquot Solutions Limited | Taunton | 1998 |
| Alira Ltd | Waterlooville | 2025 |
| Alirezapp Ltd | London | 2025 |
| Alis Group Ltd | London | 2022 |
| Alisam Moves Ltd | Watlington | 2019 |
| Alisar Prospects Training C.I.C. | Plaistow | 2013 |
| Alisco IT Limited | Liverpool | 2018 |
| Alisea Group Ltd | Newport | 2026 |
| Alisha Limited | Birmingham | 2004 |
| Alisha Music Limited | Sheffield | 2019 |
| Alisha Raja Limited | Edgware | 2012 |
| Alishaalayna Limited | Mitcham | 2025 |
| Alishi Limited | Birmingham | 2010 |
| Aliso Veijo Limited | Basildon | 2012 |
| Alisoft Solutions Limited | Stoke-On-Trent | 2024 |
| Alison Banham Creative Ltd | Halesworth | 2012 |
| Alison Bender Limited | London | 2016 |
| Alison Cardy Ltd | Richmond | 2018 |
| Alison Crabb Marketing & Copywriting Limited | Aylesbury | 2013 |
| Alison Green Editorial Ltd | Henley-On-Thames | 2015 |
| Alison Group Limited | Hove | 2006 |
| Alison Jones Business Services Limited | Northwich | 2014 |
| Alison Lloyd ISO Services Ltd | Warrington | 2023 |
| Alison Mcconnell Ltd | Glasgow | 2019 |
| Alison Muldoon Limited | London | 2021 |
| Alison Nurthen Ltd | Weston-Super-Mare | 2024 |
| Alison Pitt Creative Ltd | London | 2015 |
| Alison Ramsay Limited | Reigate | 2007 |
| Alison Rood Ltd | Whitehills Business Park | 2018 |
| Alison Scheurer-Dewar Designs Ltd | | 2006 |
| Alison Taylor Limited | Leeds | 2021 |
| Alison Walker.Tv Ltd. | Glasgow | 2009 |
| Alison Will Limited | Edinburgh | 1987 |
| Alison Wright Pictures Ltd | Gloucester | 2014 |
| Alison Wright Reid Ltd | Heathfield | 2018 |
| Alison Young Limited | Stanmore | 2010 |
| Alison's Animals Limited | Ledbury | 2015 |
| Alisonproductionservices Ltd | Newcastle Upon Tyne | 2014 |
| Alisons Tech Solutions and Partners Ltd | South Croydon | 2025 |
| Alistair Almond Ltd | Blackburn | 2026 |
| Alistair Batey Television Limited | Abingdon | 2011 |
| Alistair Bennett Associates Ltd | Dunstable | 2009 |
| Alistair Clark Limited | Harrow | 2011 |
| Alistair Edmunds Software Consulting Limited | Totnes | 2019 |
| Alistair Grant Freelance Ltd | Ware | 2012 |
| Alistair Griffin Limited | York | 2012 |
| Alistair Holt Consulting Limited | London | 2026 |
| Alistair Little Cinematography Limited | Stoke-On-Trent | 2017 |
| Alistair Mann Ltd | Oldham | 2008 |
| Alistair O'Neill Software Ltd | Orpington | 2018 |
| Alistair Taylor Associates Limited | Ipswich | 2017 |
| Alistair Technology Limited | London | 2016 |
| Alistair Todd Ltd | Harrogate | 2008 |
| Alistair Upcraft Ltd | Letchworth Garden City | 2005 |
| Alistair Whiteley Web Design Limited | Taunton | 2008 |
| Alistar Ltd | London | 2024 |
| Alister Ltd | Princes Risborough | 2016 |
| Alisx UK Ltd | London | 2021 |
| Alit Ltd | London | 2026 |
| Alit Solutions Ltd | Caterham | 2004 |
| Alitech Limited | Banbury | 2023 |
| Alitech.Local Ltd | Barking | 2020 |
| Aliter Consulting Limited | Leeds | 2014 |
| Alithea Limited | London | 2025 |
| Alithion Ltd | London | 2026 |
| Alithos Limited | Cambridge | 2001 |
| Aliud Solutions Ltd | London | 2019 |
| Alium Software Ltd | Preston | 2022 |
| Aliume Limited | Ellon | 2026 |
| Aliumm Systems Ltd | Croydon | 2013 |
| Aliv Code Ltd | London | 2026 |
| Alive Alone Ltd | London | 2017 |
| Alive and Kicking Publishing Limited | Harrogate | 2011 |
| Alive and Well Songs Limited | London | 2019 |
| Alive Biometrics Ltd | Bridport | 2026 |
| Alive Entertainment Ltd | London | 2024 |
| Alive Games Ltd | London | 2024 |
| Alive in the Morning Ltd | London | 2017 |
| Alive Industries Limited | Great Missenden | 2023 |
| Alive IT Consultancy Ltd | Wokingham | 2011 |
| Alive Media Limited | Bury | 2008 |
| Alive Music Limited | London | 2026 |
| Alive Reality Limited | Greysouthen | 2025 |
| Alive Robotics Ltd | Great Missenden | 2025 |
| Alive Technology Limited | Ipswich | 2003 |
| Alivedots.Com Ltd | Southend-On-Sea | 2025 |
| Alivein Tech Limited | Tunbridge Wells | 2017 |
| Alivia Publishing Ltd | London | 2026 |
| Alix Digital Ltd | London | 2026 |
| Alix Guichard Ltd | Morden | 2024 |
| Alix Media Ltd | London | 2018 |
| Alixar Limited | York | 2003 |
| Alixe Lobato Limited | Hebden Bridge | 2017 |
| Alixx Media Ltd | Haywards Heath | 2026 |
| Alixys Ltd | London | 2019 |
| Aliya Consultancy Limited | Ilford | 2018 |
| Aliyaqaiser Productions Ltd | Salford | 2014 |
| Aliyeva Ltd | London | 2025 |
| Aliyomi Solutions Ltd | Oldham | 2010 |