| Artisan Axis Ltd | Construction | 2024 |
| ASA Cycles Limited | Wholesale & retail | 2016 |
| Ascension Events Ltd | Administrative & support | 2025 |
| Ascenterra Ltd | Construction | 2010 |
| Ascentia Living Support Limited | Health & social care | 2020 |
| Ascentia Operations Ltd | Administrative & support | 2019 |
| ASH Moore Consulting Limited | Administrative & support | 2021 |
| ASH Woods Hair Ltd | Other services | 2023 |
| Ashbrooke Properties Ltd Ltd | Households | 2020 |
| Ashby Cafe Holdings Limited | Hospitality | 2022 |
| Ashby Canal Trust | Arts & recreation | 2000 |
| Ashby DE LA Zouch & District Agricultural Society Ltd | Administrative & support | 2013 |
| Ashby Home Developments Ltd | Construction | 2025 |
| Ashby Manor Close Management Company Ltd | Extraterritorial | 2013 |
| Ashby Woulds Limited | Hospitality | 2018 |
| Ashlawn Meadows (Rugby) Management Company Ltd | Households | 2020 |
| Ashleigh Associates Limited | Health & social care | 2009 |
| Ashwood Grange (Aston on Trent) Management Company Limited | Households | 2019 |
| ASK Dhesi Ltd | Real estate | 2025 |
| Aspire Hair Design Ltd | Arts & recreation | 2013 |
| Asset Protection Service Limited | Professional & scientific | 2010 |
| Assured Solutions Limited | Manufacturing | 1988 |
| AST Garage Services Limited | Professional & scientific | 2009 |
| Atherstone Place Residents Management Company Limited | Households | 2025 |
| Atlantis Design Ltd | Wholesale & retail | 2025 |
| Atomic Pyrotechnics Ltd | Arts & recreation | 2024 |
| Atomizer Aerosols Limited | Wholesale & retail | 2017 |
| Aton Consultancy Limited | Education | 2015 |
| Audens Way 1970 Limited | Extraterritorial | 2014 |
| Augustus Grange Management Company Limited | Households | 2018 |
| Aura Adornments Ltd | Wholesale & retail | 2020 |
| Autism Derby by Julie Fearn and Associates Ltd | Education | 2019 |
| Auto Smart Vehicle Repairs Ltd | Wholesale & retail | 2011 |
| Autocar (Overseal) Limited | Wholesale & retail | 1976 |
| Autoclenz Group Limited | Administrative & support | 2011 |
| Autoclenz Holdings Limited | Other services | 2015 |
| Automach Ltd | Administrative & support | 2021 |
| Autoplaytec Limited | Manufacturing | 2018 |
| Avail Learning & Development Ltd | Information & communication | 2016 |
| Availto Ltd | Information & communication | 2025 |
| Avenva Holdings Limited | Financial services | 2023 |
| Axiom Career Partners Ltd | Administrative & support | 2023 |
| Axiom Site Solutions Limited | Construction | 2014 |
| Aykroyds & TDP Licensing Limited | Other services | 2001 |
| AYO 18 Limited | Extraterritorial | 2018 |
| Ayre Support Limited | Information & communication | 2004 |
| Azmat Developments Limited | Administrative & support | 2003 |
| Azobe Solutions Ltd | Administrative & support | 2023 |
| B Mobile Tyres Ltd | Wholesale & retail | 2019 |
| B&B Butchers Limited | Wholesale & retail | 2025 |
| B. Winfieldale & Sons Limited | Energy | 2000 |
| B.B.C.S. Limited | Manufacturing | 2003 |
| B.D.C. Engineering (Nuneaton) Limited | Real estate | 1968 |
| B.L. Trigg Haulage Limited | Transport & logistics | 2001 |
| B.P. Coton Ltd. | Construction | 2002 |
| B.W. Plant Hire Limited | Professional & scientific | 1971 |
| BA4 Foundations Ltd | Construction | 2022 |
| Babb Developments Limited | Construction | 1998 |
| Bacon Logistics Limited | Transport & logistics | 2016 |
| Bailey Property Rentals Limited | Real estate | 2025 |
| Bak-Rak. Ltd | Manufacturing | 1999 |
| Baker Design Engineering Ltd | Professional & scientific | 2019 |
| Baker Hoyles Television Company Limited | Administrative & support | 1981 |
| Ballantyne Enterprises Limited | Hospitality | 2006 |
| Ballavar Design Ltd | Information & communication | 2017 |
| Baltic Wharf Totnes (Flats) Management Company Limited | Households | 2016 |
| Bamber Bridge Management Company Limited | Construction | 1998 |
| Banton Property Investments Limited | Real estate | 2020 |
| Bar XV Limited | Hospitality | 2010 |
| Barham House Freehold (W1) Limited | Households | 2019 |
| Barker & Sons Plumbing Ltd | Manufacturing | 2023 |
| Barley Meadows (Upton) Management Company Limited | Households | 2019 |
| Barleyfields (Winterslow) Management Company Limited | Households | 2017 |
| Barns Heath Limited | Real estate | 2023 |
| Barrie Road 1970 Limited | Extraterritorial | 2014 |
| Barrie Stevenson Inns Ltd | Hospitality | 2022 |
| Barros Prints Ltd | Arts & recreation | 2025 |
| Bartley Business Associates Limited | Construction | 2013 |
| Barton Accountancy Limited | Professional & scientific | 2022 |
| Barton Investments Limited | Other services | 2022 |
| Bateman Construction (Midlands) Limited | Construction | 2025 |
| Bath & More Ltd | Wholesale & retail | 2020 |
| Bathrooms @ SK & Co Limited | Construction | 2024 |
| Bathrooms Made Simple Ltd | Wholesale & retail | 2019 |
| BBL Fencing and Paving Ltd | Administrative & support | 2023 |
| BCA Freehold Company Ltd | Real estate | 2025 |
| BCG Therapy Limited | Other services | 2024 |
| BCR Enterprises Ltd | Real estate | 2025 |
| BDS Crane Hire and Haulage Ltd | Transport & logistics | 2026 |
| Beacon of Hope Counselling Services Ltd | Health & social care | 2020 |
| Beauluxe Properties Limited | Real estate | 2024 |
| Bee's Norfolk Holiday Cottages Ltd | Hospitality | 2025 |
| Beech Hill Close (Greenview) Management Company Limited | Households | 2012 |
| Beech Hill Road (NO 2) Management Company Limited | Households | 2014 |
| Beehive Woods Ltd | Agriculture & fishing | 2026 |
| Beer Goggles Ltd | Administrative & support | 2021 |
| Beersheva Plant Hire Ltd | Professional & scientific | 2025 |
| Beeson Trees Limited | Administrative & support | 2021 |
| Behind the Tools Ltd | Professional & scientific | 2026 |
| Bellatores Publishing Ltd | Information & communication | 2022 |