| Abundant Mimi Limited | Health & social care | 2021 |
| Abundant Property Investments Ltd | Other services | 2014 |
| Abundant Rain Services Ltd | Wholesale & retail | 2021 |
| Abunoor Foods Ltd | Hospitality | 2007 |
| Abus (UK) Ltd | Administrative & support | 2004 |
| Abus Ltd | Transport & logistics | 2002 |
| ABW Accountants Limited | Professional & scientific | 2014 |
| ABZ Hire Limited | Transport & logistics | 2024 |
| AC & DC Properties Ltd | Construction | 2025 |
| AC Auto Solutions Ltd | Wholesale & retail | 2012 |
| AC Coms Limited | Construction | 2013 |
| AC Creative Innovations Ltd | Education | 2013 |
| AC Family Investment Ltd | Real estate | 2025 |
| AC Home Surveys Ltd | Professional & scientific | 2021 |
| AC Property & Developments Limited | Real estate | 2017 |
| AC Services (Southern) Limited | Manufacturing | 2000 |
| AC Solucion UK Ltd | Professional & scientific | 2020 |
| AC Tech Consulting Ltd | Information & communication | 2008 |
| AC4 Ltd | Other services | 2026 |
| ACA Services Limited | Professional & scientific | 2023 |
| Acacia Care Limited | Health & social care | 1993 |
| Acacia SW Ltd | Transport & logistics | 2020 |
| Acacia Traders Ltd | Hospitality | 2022 |
| Academic Camp Limited | Education | 2013 |
| Academic Profiling Tests Limited | Education | 2021 |
| Academic Services Ltd | Education | 2018 |
| Academic Summer Limited | Education | 2008 |
| Academic Tutor Online Limited | Education | 2017 |
| Academicheck Ltd | Information & communication | 2025 |
| Academy for Contemporary Circus and Physical Theatre | Education | 1994 |
| Academy of Gymnastics Club Limited | Arts & recreation | 2002 |
| Academy of Relationship Management Limited | Administrative & support | 2022 |
| Acamar Records Limited | Manufacturing | 2017 |
| Acamar Songs Limited | Arts & recreation | 2017 |
| Accelerate Cars Ltd | Wholesale & retail | 2020 |
| Accelerator Solutions Limited | Other services | 2000 |
| Accelero Limited | Information & communication | 2002 |
| Accent Build & Design (WW) Ltd | Real estate | 2026 |
| Accent Building and Design (UK) Ltd | Construction | 2010 |
| Accent Financial Planning Limited | Financial services | 2023 |
| Access 2 Homes Ltd | Real estate | 2022 |
| Access 97 Ltd | Construction | 2023 |
| Access Composites Ltd | Professional & scientific | 2023 |
| Access for ALL - South West CIC | Professional & scientific | 2025 |
| Access for ALL UK Ltd | Professional & scientific | 2026 |
| Access for Students Limited | Education | 2017 |
| Access Labour and Logistics Limited | Construction | 2026 |
| Access NRI Consultancy PVT. Limited | Financial services | 2021 |
| Access UK Visa Ltd | Professional & scientific | 2024 |
| Accessible Events Ltd | Arts & recreation | 2022 |
| Accessible Moves CIC | Health & social care | 2025 |
| Accessible Transport 4 U Community Interest Company | Transport & logistics | 2013 |
| Accesstec Ltd | Construction | 2019 |
| Accident Claims Assistance Limited | Wholesale & retail | 2020 |
| Accident Claims Handlers Limited | Wholesale & retail | 1999 |
| Accidental Books Limited | Extraterritorial | 2011 |
| Accipitus Ltd | Information & communication | 2025 |
| Acclaim Driving School Limited | Administrative & support | 2002 |
| Accomplyst Ltd | Information & communication | 2025 |
| Accord Financial Planning Limited | Other services | 2013 |
| Accord International Planning Limited | Financial services | 2018 |
| Account Books Services Limited | Professional & scientific | 1999 |
| Accountable Group Ltd | Professional & scientific | 2024 |
| Accountancy Solutions (South West) Ltd | Professional & scientific | 2009 |
| Accountax Services (Swindon) Limited | Professional & scientific | 1993 |
| Accountech Services Ltd | Professional & scientific | 2014 |
| Accounting Advice Bristol Ltd | Real estate | 2018 |
| Accounting Advice Limited | Professional & scientific | 2012 |
| Accounting Solutions Limited | Professional & scientific | 1997 |
| Accountingweb Limited | Administrative & support | 2017 |
| Accounts Plus Bristol Limited | Professional & scientific | 2024 |
| Accountsecure Limited | Professional & scientific | 2018 |
| Accredited Accounting Services Ltd | Professional & scientific | 2007 |
| Accromist Limited | Professional & scientific | 2009 |
| Accru Partners UK Ltd | Financial services | 2024 |
| Accu Solution Services UK Limited | Information & communication | 2025 |
| Accudo Solutions Limited | Administrative & support | 2006 |
| Accuracy Building Contractors Limited | Construction | 2003 |
| Accure Health CIC | Education | 2025 |
| Accure Health Consultancy Ltd | Health & social care | 2015 |
| ACD Homes Ltd | Construction | 2010 |
| Acdc Productions Limited | Information & communication | 2015 |
| Ace Aggregate Processing Limited | Mining & quarrying | 2014 |
| Ace Car Autos Limited | Wholesale & retail | 2025 |
| Ace Catering Equipment Limited | Manufacturing | 2012 |
| Ace Ceramic Tiling Limited | Construction | 2008 |
| Ace Contract Cleaning Ltd | Administrative & support | 2026 |
| Ace Dental Studio Ltd | Professional & scientific | 2016 |
| Ace Dog Training Limited | Other services | 2007 |
| Ace FAV Ltd | Wholesale & retail | 2022 |
| Ace GAS Bristol Limited | Construction | 2017 |
| Ace Gloucester Ltd | Construction | 2023 |
| Ace Lettings (Bristol) Limited | Real estate | 2021 |
| Ace Letty Auto Limited | Wholesale & retail | 2020 |
| Ace Motorcycle Solutions Ltd | Education | 2019 |
| Ace Motorcycle Training UK Ltd | Education | 2009 |
| Ace Motorsport Concepts Limited | Arts & recreation | 1998 |
| Ace Plumbing and Heating (Bristol) Ltd | Construction | 2019 |
| Ace Precision Engineering Ltd | Information & communication | 2015 |
| Ace Property (Bristol) Limited | Real estate | 2025 |