| Anchor and Ascend Ltd | Real estate | 2026 |
| Anchor Beacon Ltd | Information & communication | 2024 |
| Anchor Electrical and Building Services Limited | Wholesale & retail | 2004 |
| Anchor Facilities Management Ltd | Hospitality | 2020 |
| Anchor Phoenix Solicitors Ltd | Professional & scientific | 2026 |
| Anchor Professional Services Ltd | Professional & scientific | 2017 |
| Anchor Training and Learning | Administrative & support | 2012 |
| Anchor Watch Management (Salcombe) Limited | Hospitality | 1975 |
| Anchorage Health Limited | Health & social care | 2020 |
| Anchorbid Limited | Information & communication | 2025 |
| Anchorpoint Consultants Ltd | Real estate | 2024 |
| Anchors Fast Food Kitchen Ltd | Wholesale & retail | 2025 |
| Ancientsoaps Ltd | Manufacturing | 2025 |
| Anco Electrical Installations Ltd | Construction | 2007 |
| AND Capital Projects Ltd | Professional & scientific | 2024 |
| AND of Poole Ltd | Construction | 2011 |
| Andalusia Food Park Ltd | Real estate | 2025 |
| Andconstruct Services Ltd | Construction | 2025 |
| Andel Plastics Limited | Manufacturing | 1975 |
| Andersen Harvey Lake and Company Limited | Extraterritorial | 1983 |
| Anderson & Co Surveillance & Private Investigators Ltd | Administrative & support | 2019 |
| Anderson 89 Ltd | Administrative & support | 2013 |
| Anderson Councel Limited | Construction | 2010 |
| Anderson-Carr Security Ltd | Administrative & support | 2026 |
| Andersons & Co. UK Ltd | Construction | 2022 |
| Andersons CA Ltd | Professional & scientific | 1993 |
| Anderton Housing Ltd | Real estate | 2025 |
| Andfacts Limited | Information & communication | 2020 |
| Andi Trans Limited | Administrative & support | 2016 |
| Andilis Group Ltd | Transport & logistics | 2019 |
| Andlin Cleaning & Maintenance Limited | Other services | 2015 |
| Andorell Limited | | 1986 |
| Andrah Limited | Real estate | 2025 |
| Andre TM Ltd | Construction | 2025 |
| Andrea Christopher Coaching Limited | Administrative & support | 2021 |
| Andreadrive Ltd | Transport & logistics | 2026 |
| Andreanna's Fishery Ltd | Hospitality | 2023 |
| Andreas Larsson Limited | Professional & scientific | 2012 |
| Andreea’S Cosmetic and Hair Ltd | Wholesale & retail | 2024 |
| Andrei Droc Transport Ltd | Transport & logistics | 2026 |
| Andrei Eric Ltd | Transport & logistics | 2022 |
| Andrei Fotea Transport Ltd | Transport & logistics | 2024 |
| Andrei Sandru Ltd | Transport & logistics | 2014 |
| Andrew & Co Maintenance Limited | Construction | 2025 |
| Andrew Chubb Consulting Limited | Professional & scientific | 2019 |
| Andrew Gidney Limited | Financial services | 2004 |
| Andrew Goodman Investments Ltd | Real estate | 2020 |
| Andrew Lloyd Clothing Ltd | Wholesale & retail | 2021 |
| Andrew Morrison & Associates Ltd | Real estate | 1999 |
| Andrew Pain Ltd | Education | 2022 |
| Andrew Penman Ltd | Wholesale & retail | 2018 |
| Andrew Price Investment Limited | Real estate | 2021 |
| Andrew Quinn Homes Limited | Construction | 2022 |
| Andrew R Field Limited | Professional & scientific | 2012 |
| Andrew Rowley Limited | Transport & logistics | 2003 |
| Andrew Walker CCM Limited | Real estate | 2016 |
| Andrew's Recycling Limited | Water & waste | 2013 |
| Andrews Bikes Ltd | Wholesale & retail | 2024 |
| Andrews Tools and Transport Ltd | Wholesale & retail | 2021 |
| Andro Primo Limited | Arts & recreation | 2026 |
| Andromeda Commerce Ltd | Information & communication | 2018 |
| Andromeda Site Management Ltd | Construction | 2018 |
| Andromeric Services Ltd | Manufacturing | 2022 |
| Andronovo Estates Limited | Construction | 2016 |
| Andrzej Styslo Ltd | Other services | 2019 |
| Andstylis Limited | Manufacturing | 2021 |
| Andvic Civils Ltd | Construction | 2017 |
| Andy 0614 Limited | Other services | 2026 |
| Andy Ballard Housing Solutions Ltd | Professional & scientific | 2012 |
| Andy Ballard Ltd | Professional & scientific | 2011 |
| Andy Coffee Ltd | Hospitality | 2025 |
| Andy Millward - Nutritionist Ltd | Health & social care | 2025 |
| Andy Paul Sports Consulting Limited | Education | 2013 |
| Andy's Accountancy Ltd | Professional & scientific | 2024 |
| Andybest Limited | Construction | 2014 |
| Andyz Takeaway Ltd | Hospitality | 2016 |
| Andzia Limited | Transport & logistics | 2017 |
| ANE Housing Ltd | Real estate | 2019 |
| Anedo Finger Licking Restaurant Ltd | Hospitality | 2024 |
| Anees Agha Ltd | Wholesale & retail | 2025 |
| Anefiox Ltd | Information & communication | 2011 |
| Aneka RAD Ltd | Health & social care | 2025 |
| Anesu Property Ltd | Real estate | 2025 |
| Anesu Tutors Ltd | Education | 2024 |
| Anet Ltd | Wholesale & retail | 2020 |
| Aneta Cleaning Services Ltd | Administrative & support | 2022 |
| Anfa Interior Architecture Limited | Professional & scientific | 2025 |
| Anfield Property Investment Ltd | Real estate | 2024 |
| Angel (London) Limited | Real estate | 1999 |
| Angel 333 Limited | Construction | 2023 |
| Angel Academy Limited | Education | 2017 |
| Angel BR Management Ltd | Professional & scientific | 2021 |
| Angel D Limited | Health & social care | 2026 |
| Angel Dental Implant Centre Ltd | Health & social care | 2006 |
| Angel Estates Limited | Real estate | 1997 |
| Angel Estates West Midlands Limited | Real estate | 2011 |
| Angel Fashion Commerce Limited | Wholesale & retail | 2012 |
| Angel Garden (UK) Ltd | Hospitality | 2014 |
| Angel Group Limited | Hospitality | 2000 |
| Angel Guard Limited | Manufacturing | 2017 |