| Alison Pirfo Consulting Ltd | Watford | 2014 |
| Alison Poole Designs Limited | Middlesbrough | 2014 |
| Alison Rail Ltd | Glasgow | 2026 |
| Alison Ralston Consultancy Limited | Sheffield | 2019 |
| Alison Readman Consultancy Services Limited | Lichfield | 2019 |
| Alison Robson-Young Limited | Worthing | 2016 |
| Alison Saunders Ltd | Leamington Spa | 2014 |
| Alison Spencer Consultancy Limited | Fringford | 2022 |
| Alison Stewart Literacy Consultancy Limited | Sowerby Bridge | 2012 |
| Alison Stone Surveyors Limited | Southend-On-Sea | 2019 |
| Alison Sutton Consulting Ltd | Fleet | 2015 |
| Alison Tucker Limited | Bolton | 2014 |
| Alison Unsted Associates Limited | Wallington | 2018 |
| Alison Vois Limited | London | 2024 |
| Alison Ward Consulting Ltd | Ellesmere | 2020 |
| Alison Watkins Communications Limited | Penarth | 2015 |
| Alison Whalley Limited | Preston | 2010 |
| Alison Whitehorn Consultancy Ltd | Godalming | 2021 |
| Alison Wiltshire Ltd | London | 2018 |
| Alison Wood Services Ltd | Bourne End | 2007 |
| Alison Young Planning Associates Ltd | Sawbridgeworth | 2019 |
| Alisonn Holding Ltd | London | 2025 |
| Alisonn Ltd | London | 2025 |
| Alisonpj Ltd | Altrincham | 2019 |
| Alisons Land Investments Limited | Luton | 2004 |
| Alispacecia Ltd | Leigh-On-Sea | 2025 |
| Alispera Communications Limited | Macclesfield | 2013 |
| Alissa Davies Consulting Ltd | Bristol | 2025 |
| Alist Legal Advisory Limited | London | 2026 |
| Alistair Bradley Coaching Ltd | Bath | 2015 |
| Alistair Bromhead Limited | Leatherhead | 2009 |
| Alistair Brown Limited | Paisley | 2003 |
| Alistair Bullen & Associates Limited | Maidenhead | 1990 |
| Alistair Burroughs Design Partnership Limited | Cardiff | 1988 |
| Alistair Claxton Consulting Ltd | Exeter | 2024 |
| Alistair Dance Ltd | Camberley | 2025 |
| Alistair Dodd Consulting Limited | Southwick | 2005 |
| Alistair Downie Limited | Glasgow | 2015 |
| Alistair Duncan (Glasgow Scotland) Limited | Coatbridge | 1994 |
| Alistair Duncan Limited | Coatbridge | 1994 |
| Alistair Elliott Ltd | Hitchin | 2012 |
| Alistair Flatman Planning Limited | Leeds | 2017 |
| Alistair Forfar Limited | Coatbridge | 1991 |
| Alistair Fulton Limited | London | 2024 |
| Alistair Hacking Limited | London | 1995 |
| Alistair Hares Extra Curricular Activities Limited | London | 2025 |
| Alistair Harrison Communications Ltd | Great Yarmouth | 2020 |
| Alistair Hawkins Architect Ltd | Edinburgh | 2012 |
| Alistair Hopkins Ltd | Llanfairfechan | 2017 |
| Alistair JH Crump Ltd | Basingstoke | 2021 |
| Alistair Jones Photography Limited | Winchester | 2011 |
| Alistair Lockhart and Co Limited | London | 2018 |
| Alistair Martin Ltd | London | 2023 |
| Alistair Millar Limited | Newark | 2009 |
| Alistair Miller Business Management Services Limited | Hertfordshire | 2006 |
| Alistair Milne Economics Consultancy Limited | Newhaven | 2009 |
| Alistair Mitchell Co. Limited | Boston | 2004 |
| Alistair Prince Advisory Limited | Loughborough | 2024 |
| Alistair Riley Architects Ltd | Tamworth | 2021 |
| Alistair Robertson Ltd | Pontefract | 2025 |
| Alistair Shaw Limited | Maxted Road | 2007 |
| Alistair Sutton Consulting Ltd | Long Eaton | 2022 |
| Alistair Townsend Limited | Mansfield | 2017 |
| Alistair W Baldwin Associates Limited | York | 2010 |
| Alistair Warrell Limited | Berkhamsted | 2022 |
| Alistair Wilkie Law Accountants Limited | Edinburgh | 2012 |
| Alistair Williams Limited | Milton Keynes | 2012 |
| Alister Advisory Limited | London | 2023 |
| Alister Fair Consulting Limited | Lytham St. Annes | 2009 |
| Alister MAC Ltd | Stirling | 2020 |
| Alister Sansum Ltd | Haslemere | 2024 |
| Alita Star Events Ltd | Luton | 2023 |
| Alita Therapeutics Ltd | London | 2025 |
| Alitas UK Limited | London | 2011 |
| Alite Search Ltd | Manchester | 2020 |
| Alitech Precision Parts Limited | Towcester | 2020 |
| Aliter White Limited | Mold | 2022 |
| Alithea Capital Ltd | London | 2019 |
| Alitus Limited | Bristol | 2015 |
| Ality Ltd | Reading | 2015 |
| Alium CSI Limited | Leeds | 2021 |
| Alium Group Limited | Bristol | 2017 |
| Alium International Legal Services Limited | London | 2026 |
| Alium Legal Limited | London | 2026 |
| Alium Media Limited | Leeds | 2019 |
| Aliunde 7 Limited | St Albans | 2002 |
| Aliunde Consulting Limited | London | 2013 |
| Aliunde Investments Limited | London | 2015 |
| Alius Consulting Ltd | London | 2026 |
| Alius Ventures Limited | Mediacityuk | 2020 |
| Alivan Transport Ltd | Hatfield | 2019 |
| Alive & Kicking Global Limited | London | 2018 |
| Alive Accountancy Limited | Bedford | 2018 |
| Alive Advertising Limited | Great Missenden | 2008 |
| Alive Collective Limited | Grantham | 2025 |
| Alive Communications Limited | Camberley | 1999 |
| Alive Connected Limited | Peterborough | 2023 |
| Alive Consulting Ltd | Surbiton | 2023 |
| Alive Environmental Ltd | Armagh | 2019 |
| Alive Events Limited | Romford | 2002 |