| 1-2-1 Accountancy (UK) Ltd | Professional & scientific | 2011 |
| 14-27 Management Limited | Households | 2000 |
| 1HUTCH Ecom Ltd | Information & communication | 2024 |
| 1ST Action GAS & Heating Limited | Construction | 2016 |
| 1ST Call Transport Limited | Mining & quarrying | 2022 |
| 1STPLACE4TROPHIES Limited | Wholesale & retail | 2015 |
| 2 Twisted Scissors Ltd | Other services | 2020 |
| 2SLR Limited | Real estate | 2022 |
| 365PARTS Limited | Wholesale & retail | 2026 |
| 3975 Automotive Limited | Wholesale & retail | 2023 |
| 3975 Brands Limited | Wholesale & retail | 2023 |
| 3975 Holdings Ltd | Professional & scientific | 2019 |
| 3975 Limited | Administrative & support | 2011 |
| 3975 Properties Ltd | Real estate | 2019 |
| 3D Upholstery Limited | Wholesale & retail | 2002 |
| 4BIM Limited | Professional & scientific | 2020 |
| 554/556 Charminster Road RTM Company Limited | Households | 2025 |
| A & M Catering (Midlands) Limited | Hospitality | 2024 |
| A & R Network Solutions Ltd | Construction | 2012 |
| A C Locum Services UK Ltd | Health & social care | 2023 |
| A D Tyres Limited | Wholesale & retail | 2003 |
| A H Furnishings Limited | Wholesale & retail | 2025 |
| A Hadley Accounting Services Limited | Professional & scientific | 2014 |
| A N Management Limited | Arts & recreation | 1997 |
| A O'Hara Carpentry Services Ltd | Construction | 2002 |
| A R D Heritage Limited | Wholesale & retail | 2018 |
| A&M Bodyworx Limited | Wholesale & retail | 2021 |
| A. C. Badlan Limited | Construction | 2002 |
| A.B. Taylor Developments Limited | Real estate | 2023 |
| A.C.M.C. Limited | Construction | 2012 |
| A.E. Chapman & Co (Holdings) Limited | Financial services | 2025 |
| A.E.Chapman & Co.,(Old Hill)Limited | Manufacturing | 1942 |
| A.W. Raybould Limited | Manufacturing | 1965 |
| A2A Qualifications Ltd | Education | 2018 |
| A2M Safety Limited | Administrative & support | 2004 |
| AAA Merchandise Ltd | Wholesale & retail | 2018 |
| ABG Construction & Mineral Tools Limited | Manufacturing | 1996 |
| ABS Health and Safety Ltd | Education | 2008 |
| AC Business Consultancy Ltd | Information & communication | 2020 |
| AC Cleaning Solutions Ltd | Administrative & support | 2023 |
| AC Products Limited | Wholesale & retail | 2013 |
| Acai Investments Limited | Real estate | 2021 |
| Accelerate Global Partners Ltd | Administrative & support | 2024 |
| Accent Signs Limited | Professional & scientific | 1994 |
| Access Architectural Ironmongery Limited | Wholesale & retail | 2008 |
| Access Technologies Limited | Manufacturing | 1993 |
| Acco Systems Holdings Limited | Financial services | 2025 |
| Ace Embroidery Limited | Other services | 2004 |
| Ace Marquees Ltd | Real estate | 2006 |
| Acorn Optical Limited | Wholesale & retail | 1987 |
| ACS Bespoke Engineering Limited | Professional & scientific | 2025 |
| Active Care Services Ltd | Health & social care | 2003 |
| Acuity Environmental Services Ltd | Administrative & support | 2016 |
| Adamo (Prees) Limited | Real estate | 2025 |
| Adamo Developments Limited | Construction | 2020 |
| Admire Coatings Limited | Manufacturing | 2012 |
| Adrian Melvyn Smith Ltd | Transport & logistics | 2025 |
| ADS Demolition Ltd | Construction | 2016 |
| Advanced Climate Control Ltd | Construction | 2023 |
| AFH Electrical Limited | Construction | 2020 |
| Afrimall Ltd | Wholesale & retail | 2024 |
| Ahanja Home UK Ltd | Real estate | 2025 |
| AIB Associates Limited | Professional & scientific | 2016 |
| AIM Performance Ltd | Arts & recreation | 2019 |
| AJD Foundries Limited | Manufacturing | 2024 |
| Ajmj Holdings Ltd | Financial services | 2025 |
| AJP Fire Safety Ltd | Professional & scientific | 2025 |
| AJT Supplies Limited | Manufacturing | 2006 |
| AK Midlands Properties Ltd | Real estate | 2021 |
| AK Motor Repairs Ltd | Wholesale & retail | 2021 |
| Akeel's Cutting Station Ltd | Other services | 2025 |
| AKH Rentals Limited | Real estate | 2025 |
| Albany Equipment Limited | Wholesale & retail | 2003 |
| Albion Worldwide Limited | Professional & scientific | 2000 |
| Alcott & Argyle Ltd | Real estate | 2020 |
| Alexander Motors Car Ltd | Wholesale & retail | 2021 |
| Align Dental Holdings Limited | Financial services | 2025 |
| ALL Metal Stockholders Ltd | Administrative & support | 2017 |
| ALL Waste Recycling Solutions Ltd | Water & waste | 2022 |
| Allaggro Limited | Manufacturing | 2014 |
| Alliance Racking & Mezzanine Ltd | Construction | 2026 |
| Allied Industrial Roofing Services Limited | Construction | 1992 |
| Alpha Fleet Solutions Ltd | Manufacturing | 2023 |
| ALS Direct Limited | Construction | 2002 |
| Alvin Key Clamps Limited | Manufacturing | 2007 |
| Alwin Industrial Holdings Limited | Administrative & support | 2010 |
| Alwin Logistics Limited | Transport & logistics | 2017 |
| AM Autos UK Trading Limited | Wholesale & retail | 2021 |
| Amber Cradley Heath Limited | Hospitality | 2023 |
| Amber Shearing Limited | Manufacturing | 2003 |
| Ambros Home Maintenance Ltd | Construction | 2025 |
| Amelia Jayne Ltd | Health & social care | 2011 |
| AMJ Global Ltd | Wholesale & retail | 2022 |
| Amros Golf Event Management Limited | Administrative & support | 2013 |
| ANC Reptiles Ltd | Wholesale & retail | 2019 |
| Anchoring International Limited | Extraterritorial | 1992 |
| Andy Price PUB Management Limited | Hospitality | 2026 |
| Angel Ales Limited | Manufacturing | 2010 |
| Angel Touch Beauty Spa Ltd | Other services | 2026 |
| Angelas Helping Hands CIC | Wholesale & retail | 2024 |