| Acacia Grove Properties Limited | Real estate | 2014 |
| Acacia Properties Ltd | Real estate | 2020 |
| Acacia Property Group (Yorkshire) Limited | Real estate | 2023 |
| Acaciawood Limited | Manufacturing | 2012 |
| Acad Trading Limited | Wholesale & retail | 2012 |
| Academic and Professional Research International Limited | Professional & scientific | 1997 |
| Academic Appointments 2017 Limited | Financial services | 2017 |
| Academic Appointments Ltd | Administrative & support | 2004 |
| Academic Properties Ltd | Real estate | 2019 |
| Academium Ltd | Extraterritorial | 2010 |
| Academy 2828 Limited | Extraterritorial | 2001 |
| Academy of Fabulous Stuff Community Interest Company | Health & social care | 2016 |
| Academy of Oriental Cuisine Limited | Real estate | 1994 |
| Academy Staffing Solutions Ltd | Administrative & support | 2025 |
| Academy Training Network Limited | Other services | 2024 |
| ACADEMY94 Ltd | Education | 2026 |
| Acanthus Associated Architectural Practices Limited | Professional & scientific | 1986 |
| Acanthus Darbyshire Architects Limited | Professional & scientific | 2013 |
| Acanthus W S M Architects Limited | Professional & scientific | 1987 |
| Acasa Property Limited | Real estate | 2022 |
| Acaster Clarke Pubs Ltd | Hospitality | 2017 |
| Acaster Safety Management Limited | Professional & scientific | 1997 |
| Acatcalledfrank Ltd | Other services | 2014 |
| Acatrinei F Delivery Ltd | Transport & logistics | 2025 |
| Acca Solutions Limited | Administrative & support | 2014 |
| Accede Marketing Ltd | Administrative & support | 2025 |
| Accelerated HR Ltd | Professional & scientific | 2024 |
| Accelerated Training Limited | Administrative & support | 2009 |
| Accent Clothing Limited | Real estate | 2021 |
| Accent Ladies Limited | Wholesale & retail | 1991 |
| Accent Menswear Ltd. | Wholesale & retail | 1996 |
| Accent Properties Limited | Real estate | 2017 |
| Accent Umbrella Ltd | Administrative & support | 2022 |
| Accept Consultancy Ltd | Administrative & support | 2024 |
| Accepted Lettings Ltd | Real estate | 2024 |
| Access 13 Limited | Professional & scientific | 2005 |
| Access 14 Limited | Financial services | 2018 |
| Access ALL Media Ltd | Education | 2018 |
| Access Commercial Investors 3 Limited | Financial services | 2016 |
| Access Commercial Investors 5 Limited | Financial services | 2018 |
| Access Motor Stocking Ltd | Hospitality | 2015 |
| Access Moving Image Limited | Information & communication | 2003 |
| Access Services Group Ltd | Professional & scientific | 2023 |
| Access the Music Limited | Other services | 2021 |
| Access to Beauty CIC | Education | 2026 |
| Accessibility Toolbar Ltd | Information & communication | 2024 |
| Accesspoint Migration Services Limited | Information & communication | 2019 |
| Accessure Limited | Other services | 2025 |
| Accian Limited | Information & communication | 2025 |
| Accident Care (Yorkshire) Ltd | Administrative & support | 2018 |
| Accident Injury Advisory Ltd | Other services | 2008 |
| Acclaimed Security Services Ltd | Administrative & support | 2020 |
| Accountants Advisory Group Ltd | Professional & scientific | 2023 |
| Accountants for Small Business Ltd | Professional & scientific | 2000 |
| Accountants in Demand Limited | Administrative & support | 2005 |
| Accounting - Buddy Ltd | Extraterritorial | 2013 |
| Accounting Agents Ltd | Professional & scientific | 2021 |
| Accounting Solutions Yorkshire Ltd | Professional & scientific | 2016 |
| ACCOUNTING4CREATORS Ltd | Professional & scientific | 2023 |
| Accountingpro Yorkshire Ltd | Professional & scientific | 2020 |
| Accounts Department Online Limited | Extraterritorial | 2006 |
| Accounts Geek Ltd | Professional & scientific | 2016 |
| Accqui Ltd | Information & communication | 2026 |
| Accr Services Limited | Professional & scientific | 2019 |
| Accu-Scribe Ltd | Administrative & support | 2020 |
| Accu.Med Limited | Health & social care | 2017 |
| ACD (SPV1) Ltd | Real estate | 2025 |
| ACD (Uttoxeter) Ltd | Real estate | 2026 |
| Ace American Autos Ltd | Wholesale & retail | 2018 |
| Ace Auto Motors Ltd | Wholesale & retail | 2023 |
| Ace Autolocksmith Yorkshire Ltd | Other services | 2025 |
| Ace Bloodstock Limited | Agriculture & fishing | 2014 |
| Ace Care Solutions Limited | Administrative & support | 2023 |
| Ace Catering Limited | Wholesale & retail | 2025 |
| Ace Childcare Ltd | Health & social care | 2023 |
| Ace Computer Systems & Supplies Limited | Wholesale & retail | 2000 |
| Ace Consulting and Associates Ltd | Health & social care | 2019 |
| Ace Container Services Limited | Administrative & support | 1999 |
| Ace Creations Limited | Construction | 2022 |
| Ace Creatives Ltd | Education | 2023 |
| Ace Dentura Dent Company Limited | Wholesale & retail | 2018 |
| Ace Design Solutions Ltd | Information & communication | 2022 |
| Ace Dntl Laboratory Ltd | Manufacturing | 2023 |
| Ace Estates Services (Yorkshire) Limited | Real estate | 2012 |
| Ace Fruiterers Limited | Wholesale & retail | 2019 |
| Ace Homes Ltd | Real estate | 2020 |
| Ace Joinery Services Ltd | Construction | 2007 |
| Ace Leaflet Distribution & Print Limited | Wholesale & retail | 2015 |
| Ace Medtech Ltd | Wholesale & retail | 2026 |
| Ace of Fadez Barbershop Ltd | Other services | 2019 |
| Ace of Spaces | Real estate | 2016 |
| Ace Platform Limited | Wholesale & retail | 2019 |
| Ace Skincare Ltd | Health & social care | 2015 |
| Ace Workspace Limited | Wholesale & retail | 2025 |
| ACE3 AI Limited | Information & communication | 2024 |
| Aced by Adara Ltd | Wholesale & retail | 2020 |
| Acee Holdings Ltd | Financial services | 2026 |
| Acee Properties Ltd | Real estate | 2022 |
| Acem Properties Ltd | Administrative & support | 2015 |
| Aceman Software Solutions Ltd | Information & communication | 2020 |