| 00705087 Limited | Professional & scientific | 1961 |
| 15 to 22 Marston Croft Residents Management Company Limited | Households | 2021 |
| 2 Gloucester Road (Management) Limited | Households | 2013 |
| 2 Gloucester Road (Sales) Limited | Real estate | 2026 |
| 272 Productions Limited | Arts & recreation | 2023 |
| 2G Storage Limited | Transport & logistics | 2018 |
| 3 Lakes Shooting Ltd | Arts & recreation | 2018 |
| 3 Phase Productions Ltd | Arts & recreation | 2010 |
| 47 Cloud Ltd | Wholesale & retail | 2024 |
| 5 Star Solutions Ltd | Professional & scientific | 2019 |
| 54 Degrees North Padel Limited | Arts & recreation | 2025 |
| 6DEV Ltd | Professional & scientific | 2026 |
| 888 SEH Property Investment Limited | Real estate | 2023 |
| A Best Target Limited | Hospitality | 2015 |
| A F Medical Services Ltd | Health & social care | 2021 |
| A Little Cleaning Company Ltd | Administrative & support | 2024 |
| A Wallsgrove & SON Limited | Wholesale & retail | 2002 |
| A-Line Drainage Limited | Water & waste | 2007 |
| A. Best Electrical Limited | Construction | 2002 |
| A. Townsend Build Limited | Construction | 2023 |
| A.R.T. Aviation Limited | Transport & logistics | 2017 |
| A2Z Services Limited | Wholesale & retail | 2003 |
| Aardvark Copy Ltd | Professional & scientific | 2016 |
| Abacus Pre-School Nursery Limited | Education | 2010 |
| ACH Chiropractic Limited | Health & social care | 2026 |
| Acorn PUB Company Ltd | Hospitality | 2021 |
| Actem Environmental Limited | Administrative & support | 2024 |
| ADB Consulting Services Limited | Professional & scientific | 2017 |
| Adcomax Limited | Wholesale & retail | 2014 |
| ADD IT Metrology Limited | Information & communication | 2024 |
| ADS Farrier Services Ltd | Other services | 2016 |
| AE Group Holdings Limited | Financial services | 2023 |
| Aegis Architects and Interior Designers Limited | Professional & scientific | 2001 |
| AG Kirk Property Ltd | Real estate | 2019 |
| Agara Tech Ltd | Administrative & support | 2023 |
| AH UM Limited | Professional & scientific | 2018 |
| AJ Groundworks and Civil Engineering Ltd | Construction | 2023 |
| AJ Wise Limited | Real estate | 2025 |
| AJA Inns Ltd | Hospitality | 2018 |
| AJB & LLT Holdings Limited | Professional & scientific | 2018 |
| AJW Bricklaying Ltd | Construction | 2022 |
| AK52 Holding Limited | Administrative & support | 2023 |
| Akutec Limited | Professional & scientific | 2025 |
| Al-Ko Kober Holdings Limited | Manufacturing | 1985 |
| Al-Ko Kober Limited | Manufacturing | 1951 |
| Alderman Strategy Limited | Financial services | 2016 |
| Alex Ward Electrical Contractors Limited | Construction | 2017 |
| Alexander Newton Developments Limited | Construction | 2022 |
| Alias Surfacing Ltd | Professional & scientific | 2021 |
| Alison Stewart Marketing Limited | Other services | 2018 |
| ALL Things Tennis Limited | Wholesale & retail | 2017 |
| Altitude CS Limited | Wholesale & retail | 2012 |
| Alumet Holdings Limited | Financial services | 2020 |
| Alumet Ltd | Manufacturing | 2014 |
| Amaritz Limited | Information & communication | 2019 |
| AN Longitch Super Store Ltd | Wholesale & retail | 2024 |
| Andy Williams Creative Services Ltd | Professional & scientific | 2020 |
| Annibyniaeth Ltd | Extraterritorial | 2018 |
| Anosa Limited | Public administration | 2019 |
| Anthony James Care Limited | Health & social care | 2012 |
| Apple Training Limited | Education | 2025 |
| APT Design Services Limited | Professional & scientific | 2017 |
| Aquainform Limited | Administrative & support | 2021 |
| Aquatreat Environmental Products Ltd | Water & waste | 2007 |
| ARL Sales Ltd | Wholesale & retail | 2025 |
| Aroma Dead Sea Limited | Wholesale & retail | 2019 |
| Art & SIP Limited | Arts & recreation | 2019 |
| Artichoke Ltd | Professional & scientific | 2025 |
| Artisan Alfresco Ltd | Construction | 2025 |
| ASA Savage Limited | Professional & scientific | 2010 |
| Ascensus Ltd | Professional & scientific | 2021 |
| Ashbarn Training and Technology Limited | Professional & scientific | 2014 |
| Ashfield Coaching & Consulting Limited | Professional & scientific | 2024 |
| Atelier MW Limited | Administrative & support | 2023 |
| Atomic Estates Limited | Real estate | 2024 |
| ATS Media Ltd | Information & communication | 2015 |
| Auto Fasteners Ltd | Wholesale & retail | 2007 |
| Autonomia Ltd | Professional & scientific | 2020 |
| Avante Concepts Limited | Professional & scientific | 2001 |
| Aviation Engineering Support Ltd | Transport & logistics | 2011 |
| Avioparts Ltd | Wholesale & retail | 2022 |
| Avon Carrow Management Company Limited | Households | 1981 |
| Avon Dassett Consulting Limited | Professional & scientific | 2015 |
| Avon Food Specialist Ltd | Manufacturing | 2025 |
| Avon Solar Control Limited | Manufacturing | 2005 |
| Azure Landscapes Ltd | Administrative & support | 2021 |
| B & J Simpson Ltd | Professional & scientific | 2019 |
| B & T Builders Limited | Construction | 2014 |
| B. Line Plant Limited | Administrative & support | 1982 |
| Baby Barn Pram & Nursery Centre Limited | Wholesale & retail | 2006 |
| Badger & Associates Ltd | Wholesale & retail | 2025 |
| Bamboozi Consulting Ltd | Information & communication | 2022 |
| BAN Training & Consultancy Limited | Professional & scientific | 2017 |
| Banbury Consulting Limited | Professional & scientific | 2004 |
| Banzola Technologies Limited | Manufacturing | 2016 |
| Barefoot Partners Ltd | Professional & scientific | 2023 |
| Barely There Limited | Wholesale & retail | 2025 |
| Barfid Professional Services Limited | Professional & scientific | 2019 |
| Basi & Basi Consulting Limited | Financial services | 2011 |
| BAT Country Ltd | Professional & scientific | 2024 |