| AMG Engineering South West Ltd | Professional & scientific | 2025 |
| Amirmarika Ltd | Households | 2026 |
| AML Accountancy Solutions Ltd | Professional & scientific | 2021 |
| AML Ambulance Ltd | Wholesale & retail | 2026 |
| AML Consultancy Solutions Ltd | Information & communication | 2020 |
| AML Finance Group Ltd | Extraterritorial | 2021 |
| Amlite Ltd | Manufacturing | 2017 |
| Amohammedgp Ltd | Health & social care | 2026 |
| AMP Legacy Ltd | Financial services | 2023 |
| Ampersand Group Ltd | Professional & scientific | 2022 |
| Amplia Limited | Arts & recreation | 2023 |
| Amprologix Limited | Health & social care | 2018 |
| AMR Street Dance Ltd | Education | 2024 |
| AMS Business Accountants Ltd | Professional & scientific | 2021 |
| AMS Electrical Ltd | Construction | 2017 |
| AMS Facilities (South West) Ltd | Construction | 2020 |
| AMS Facilities (SW) Ltd | Construction | 2019 |
| AMS Group (SW) Ltd | Professional & scientific | 2025 |
| AMS Homes Ltd | Construction | 2021 |
| AMS Stairlifts Ltd | Wholesale & retail | 2021 |
| AMT Plastering Ltd | Construction | 2020 |
| Amtrac SW Ltd | Transport & logistics | 2024 |
| An-Noor Arabic Language School CIC | Education | 2019 |
| Analytical Performance Ltd | Education | 2021 |
| Analytical Support and Modelling Services Limited | Information & communication | 2003 |
| Anapoly Limited | Information & communication | 2013 |
| Anca Workforce Solutions Ltd | Manufacturing | 2022 |
| Anchor Catering (Plymouth) Limited | Extraterritorial | 2022 |
| Anchor Catering (South West) Ltd | Hospitality | 2012 |
| Anchor Court (Plymouth) Limited | Real estate | 2016 |
| Anchor Invest Ltd | Construction | 2017 |
| Anchor Line Property Ltd | Construction | 2026 |
| Anchor Point Homes Ltd | Hospitality | 2025 |
| Anchor Ridge Spaces Holdings Limited | Financial services | 2025 |
| Anchor Ridge Spaces Limited | Construction | 2025 |
| AND on That Bombshell Limited | Information & communication | 2015 |
| AND Plumbing Ltd | Construction | 2013 |
| Anderson Enterprises (Ivybridge) Ltd | Real estate | 2011 |
| Anderson Field Property Limited | Real estate | 2021 |
| Anderson Financial Planning Ltd | Financial services | 2010 |
| Andersons Garage Limited | Wholesale & retail | 2006 |
| Andi Skelley Commercial Services Ltd | Wholesale & retail | 2005 |
| Andrew Aske Associates Limited | Administrative & support | 2002 |
| Andrew Barnes Electrical Ltd | Construction | 2025 |
| Andrew Ellis Limited | Arts & recreation | 2008 |
| Andrew James Mudge Ltd | Construction | 2018 |
| Andrew Leigh IFA Ltd | Financial services | 2019 |
| Andrew Marks Upholstery Services Ltd | Other services | 2013 |
| Andrew Stagg Consultancy Ltd | Professional & scientific | 2026 |
| Andrew Stagg Ltd | Education | 2024 |
| Andrew Trust Ltd | Wholesale & retail | 2003 |
| Andrews Building and Carpentry Ltd | Manufacturing | 2006 |
| Andurn Road Company Limited | Professional & scientific | 1992 |
| Andy & Co Taxi Ltd | Transport & logistics | 2024 |
| Andy Horne Electrical Services Limited | Construction | 2007 |
| Andy Mantell Ltd | Information & communication | 2024 |
| Andy Robinson Driving School Limited | Education | 2021 |
| Andy Wharton Ltd | Arts & recreation | 2018 |
| Andy's Fencing & Landscaping Limited | Construction | 2016 |
| Andy's Vape Hardware Ltd | Wholesale & retail | 2021 |
| Andybooteconstruction Ltd | Construction | 2020 |
| Angels 2017 Limited | Other services | 2017 |
| Angiescornercafe Ltd | Hospitality | 2026 |
| Anglia Overseas Education Ltd | Education | 2023 |
| Anglo Euro Management Limited | Hospitality | 1993 |
| Anglo Rocks & Fossils Ltd | Wholesale & retail | 2026 |
| Anglo-Spanish Conexions Limited | Education | 2014 |
| Angura UK Ltd | Hospitality | 2021 |
| ANI Properties SW Ltd | Real estate | 2024 |
| Animatedlearning Ltd | Professional & scientific | 2024 |
| Aniste Solutions Limited | Professional & scientific | 2020 |
| Ankow Pictures Ltd | Information & communication | 2025 |
| Ankrom Engineering Limited | Professional & scientific | 2012 |
| Anmax Cornwall Limited | Real estate | 2026 |
| Anmax Leisure Limited | Arts & recreation | 2014 |
| ANN Joy Housing Limited | Real estate | 2025 |
| Annabel Rose Bridal Limited | Wholesale & retail | 2020 |
| Annabel's Plymouth Limited | Hospitality | 2006 |
| Anneke Limited | Wholesale & retail | 2025 |
| Annie Smith Financial Solutions Ltd | Financial services | 2018 |
| Annjon Healthcare Limited | Wholesale & retail | 2022 |
| Anode EYE Limited | Manufacturing | 2008 |
| Another Level Scaffolding (South West) Ltd | Construction | 2019 |
| Anotherwhey Limited | Information & communication | 2014 |
| Ansasorell Ltd | Real estate | 2022 |
| Ansell and Mansell Limited | Hospitality | 2018 |
| Ansur Communications Limited | Manufacturing | 2007 |
| Antarctic Developer & Publisher Ltd | Manufacturing | 2022 |
| Antex (Electronics) Limited | Manufacturing | 2003 |
| Anthony Family Investment Limited | Financial services | 2025 |
| Anthony Marks Recruitment Limited | Administrative & support | 2020 |
| Anto Construction Limited | Construction | 2018 |
| Anton Coaker English Timber Limited | Manufacturing | 2004 |
| ANU Cuisine Ltd | Hospitality | 2025 |
| ANU Enterprises PVT Ltd | Health & social care | 2022 |
| Anything Anytime Anywhere Limited | Water & waste | 2025 |
| Anything GAS Services SW Ltd | Construction | 2014 |
| Anything I.T. Plymouth Limited | Information & communication | 2019 |
| AO Abimbola Holdings UK Limited | Wholesale & retail | 2024 |
| Aodl Ltd | Financial services | 2023 |