| AND Jump Ltd | Chinnor | 2017 |
| AND MAN Engineering Design Ltd | Cheadle Hulme | 2023 |
| AND Marine Ltd. | Suffolk | 2006 |
| AND Marketing Ltd | Goole | 2020 |
| AND Motor Care Limited | Newark | 2023 |
| AND NOW for Limited | London | 2014 |
| AND NOW Partners Ltd | Ramsgate | 2026 |
| AND NOW This Ltd | Stockport | 2014 |
| AND Objects Ltd | London | 2014 |
| AND Partnership Limited | Nottingham | 2003 |
| AND Pepper Limited | Nottingham | 2024 |
| AND Posters Limited | Hornchurch | 2019 |
| AND Property Matters Ltd | Lowestoft | 2023 |
| AND Quality Engineers Limited | Leven | 2018 |
| AND Rising Limited | London | 2009 |
| AND SO Design Ltd | Oxford | 2024 |
| AND SO SHE Thinks Ltd | London | 2019 |
| AND SO the Story Goes Ltd | Gosport | 2022 |
| AND Technical Services Limited | Southampton | 1996 |
| AND Technologies Ltd | Nottingham | 2023 |
| AND Technology Research Limited | Essex | 1980 |
| AND the Family Ltd | Bristol | 2022 |
| AND the New Group Ltd | London | 2021 |
| AND the Robots Limited | London | 2021 |
| AND Then Associates Limited | Hemel Hempstead | 2019 |
| AND Then SUM Accounting Ltd | Swindon | 2015 |
| AND Then SUM Limited | London | 2017 |
| AND Then They Went Wild London Limited | London | 2021 |
| AND Thinking Limited | Lancashire | 2002 |
| AND Words Limited | Huddersfield | 2015 |
| AND YOU Limited | Whitley Bay | 2020 |
| AND+ Studios Ltd | Newcastle Upon Tyne | 2021 |
| And.Gb Ltd | Penryn | 2007 |
| AND7 Limited | Lancaster | 2018 |
| Anda Ancane Limited | London | 2018 |
| Anda Associates Limited | Lichfield | 2021 |
| Anda BA Ltd | Isleworth | 2024 |
| Anda Consultancy Limited | Watford | 2019 |
| Anda Interior Design Limited | Delph | 2025 |
| Anda Saku Ltd | Ruislip | 2020 |
| Anda Technology Limited | Chester | 2020 |
| Andacom Ltd | Stoke-On-Trent | 2024 |
| Andaga Limited | London | 2023 |
| Andagoat Limited | Shipley | 2019 |
| Andak Securities Limited | Bakewell | 1986 |
| Andal Holdings Ltd | Poole | 2023 |
| Andall Engineering (Aberdeen) Limited | Westhill | 2011 |
| Andall Enterprises Limited | Croydon | 2012 |
| Andalo Ltd | Borehamwood | 2014 |
| Andalus Consulting Ltd | Bexhill On Sea | 2021 |
| Andalus Media Ltd | Salford | 2022 |
| Andalusite Ltd | London | 2011 |
| Andama Consulting Ltd | Southport | 2025 |
| Andaman Hills Advisory Ltd | Horsham | 2022 |
| Andamiph Holdings Limited | Chester | 2023 |
| Andamiph Properties Limited | Chester | 2023 |
| Andan Limited | | 2003 |
| Andania Engineering Limited | Rotherham | 2020 |
| Andante Advisory Limited | Chesham | 2022 |
| Andante Properties Limited | Douglas | 1996 |
| Andar Consulting Limited | Southampton | 2021 |
| Andara HR Solutions Ltd | Nottingham | 2025 |
| Andare Ltd | Kettering | 2023 |
| Andare Management Consulting Ltd | Kettering | 2025 |
| Andarma Metals & Mining Partners Ltd | Brentford | 2026 |
| Andarta Advisory Ltd | Surrey | 2024 |
| Andaus Ltd | Largs | 2015 |
| Andaway Limited | Chesterfield | 2024 |
| Andaze Advantage Consulting Ltd | Tonbridge | 2023 |
| Andbash Ltd | Newmarket | 2023 |
| Andbec Associates Limited | Chipping Campden | 2024 |
| Andbetween Ltd | London | 2017 |
| Andcat Ltd | Datchet | 2018 |
| Andcer Consulting Limited | Eastbourne | 2024 |
| Andcir Limited | Bicester | 2011 |
| Andco Law Ltd | London | 2014 |
| Andco Studio Ltd | Knutsford | 2020 |
| Andd Creative Limited | Tunbridge Wells | 2020 |
| Ande Commonwealth Operations Limited | Derby | 2019 |
| Andean Alternative Capital Ltd | London | 2025 |
| Andean Capital Ltd | London | 2022 |
| Andean Consulting Limited | London | 2023 |
| Andean Lfma Investment Limited | London | 1910 |
| Andean Shepherd Ltd. | London | 2015 |
| Andean Solutions Ltd | Telford | 2018 |
| Andeb Healthcare Ltd | Leeds | 2013 |
| Andeen Insights Ltd | London | 2023 |
| Andefena Ltd | London | 2024 |
| Andeky Ltd | Wembley | 2023 |
| Andel Consultants Ltd | Weybridge | 2022 |
| Andelain Limited | Amersham | 2002 |
| Andelle Accounting Services Limited | Elstree | 2001 |
| Andelmar UK Ltd | London | 2025 |
| Andemma Limited | Margate | 2012 |
| Anden Interiors Ltd | London | 2025 |
| Ander Associates Limited | Denbighshire | 2001 |
| Ander Commercial Services Limited | Swansea | 2022 |
| Ander Consulting Ltd | London | 2024 |
| Ander Studio Ltd | London | 2025 |
| Ander Tax Limited | Linlithgow | 2005 |