| 119 Newbridge Road (ST Annes) Management Company Limited | Households | 2021 |
| 160 Wells Road Management Company Limited | Households | 1987 |
| 1ST Step Wills & Trusts Limited | Other services | 2019 |
| 31 Harnet Street Management Company Limited | Households | 2019 |
| 365 Hire Limited | Administrative & support | 2013 |
| 44 - 50 Station Road Ltd | Construction | 2015 |
| 88 Capital (Ipswich) Limited | Arts & recreation | 2026 |
| 88 Capital Limited | Arts & recreation | 2013 |
| 88CAPITAL (Stockton) Ltd | Real estate | 2018 |
| A J Windows and Doors Ltd | Construction | 2021 |
| Accelerated Medicines Design and Development Centre Limited | Professional & scientific | 2020 |
| Achieve Therapeutic Fostering Ltd | Other services | 2020 |
| ACJ Digital Accounts Ltd | Professional & scientific | 2024 |
| Acorns Court Management Company Limited | Households | 2022 |
| Adestus Limited | Professional & scientific | 2024 |
| Adjw Limited | Professional & scientific | 2016 |
| Advanced Recycling Equipment Ltd | Administrative & support | 2023 |
| AEI Compounds Limited | Manufacturing | 1920 |
| Agenci Limited | Information & communication | 2003 |
| Agius & Marlow Ltd | Real estate | 2019 |
| AGL Maintenance Cleaning Ltd | Administrative & support | 2014 |
| Airberg Limited | Wholesale & retail | 1985 |
| Akamis BIO Limited | Professional & scientific | 2006 |
| AL Invest Ltd | Administrative & support | 2008 |
| Albion Fencing & Construction Kent Limited | Construction | 2011 |
| Alexander Management Group Ltd | Financial services | 2024 |
| Algo Corp Ltd | Financial services | 2017 |
| Allscreens Ltd | Wholesale & retail | 2015 |
| AM Project Services Ltd | Professional & scientific | 2026 |
| Amity Corporation Ltd. | Professional & scientific | 2019 |
| Amour Property Investments Ltd | Real estate | 2020 |
| Analytics ITS Ltd | Information & communication | 2018 |
| Anatta Ltd | Professional & scientific | 2019 |
| Andy Widdett Brickworks Limited | Construction | 2014 |
| Anglo Dutch Model Trucks Ltd | Other services | 2011 |
| Angus Mackenzie Consulting Ltd | Mining & quarrying | 2023 |
| Anthony Best Design Limited | Other services | 2008 |
| Anvil Sparks Modelling Ltd | Information & communication | 2024 |
| Apex Envirosafe Ltd | Professional & scientific | 2025 |
| Apex Incorporated Ltd | Information & communication | 2013 |
| Apple Risk Management Limited | Professional & scientific | 2017 |
| Approved Commercial Hire Ltd | Administrative & support | 2021 |
| Approved Commercial Sales Ltd | Wholesale & retail | 2020 |
| Approved Commercial Services Ltd | Wholesale & retail | 2025 |
| Apricot Umbrella Limited | Administrative & support | 2014 |
| Arcturus Security Limited | Information & communication | 2018 |
| Arenabay Limited | Wholesale & retail | 2002 |
| Arkay Building Services Limited | Construction | 2004 |
| ARM Property Investments Limited | Real estate | 2007 |
| Armstrong Games Ltd | Manufacturing | 2023 |
| Ashley Dadd Property Ltd | Hospitality | 2025 |
| Astley Bay-Lynx Limited | Manufacturing | 2024 |
| Asymchem Limited | Manufacturing | 2017 |
| Augusta Kent Limited | Professional & scientific | 2007 |
| Aura Corporation (UK) Limited | Other services | 1998 |
| Aureum Vita Ltd | Professional & scientific | 2025 |
| Auriga Consulting Ltd | Administrative & support | 2009 |
| Auriga Group Solutions Limited | Extraterritorial | 2012 |
| Auto Glow Ltd | Wholesale & retail | 2024 |
| Aynsley Court Residents Co. Limited | Households | 1981 |
| B. Logical Consulting Ltd | Professional & scientific | 2020 |
| Babasheesh Beckenham Ltd | Hospitality | 2022 |
| Bailum Properties LLP | | 2021 |
| Baker Kell Cumming Limited | Professional & scientific | 2021 |
| Bang Tech UK Ltd | Extraterritorial | 2024 |
| Bay Barbers Ltd | Other services | 2022 |
| Baypoint Sports CIC | Education | 2019 |
| Beach Retail Limited | Wholesale & retail | 2007 |
| Beacon View Vets Limited | Professional & scientific | 2019 |
| Beandro Properties Limited | Real estate | 2018 |
| BEE Crafty BEE Happy Ltd | Wholesale & retail | 2020 |
| BEN Godden Mortgages Limited | Financial services | 2025 |
| Beresford Transport Limited | Information & communication | 1952 |
| Bergman-Taylor Limited | Professional & scientific | 2021 |
| Bespoke Garden Rooms Ltd | Construction | 2024 |
| Betteshanger Social Club CIC | Hospitality | 2023 |
| Beyond Boxing Ltd | Professional & scientific | 2026 |
| Beyonder Power UK Ltd | Wholesale & retail | 2020 |
| BG23 Ltd | Professional & scientific | 2023 |
| Bijou Bridal Studio Ltd | Wholesale & retail | 2021 |
| Biowaived Ltd | Professional & scientific | 2024 |
| Bird Photographer of the Year Limited | Professional & scientific | 2008 |
| BJT Haulage Services Ltd | Transport & logistics | 2026 |
| Black Kube Limited | Construction | 2023 |
| Blackbirds Consulting Limited | Professional & scientific | 2016 |
| Blackhall Associates Consulting Limited | Professional & scientific | 2024 |
| Blackhouse Rise Management Limited | Households | 2026 |
| Blackwater Brush Limited | Agriculture & fishing | 2024 |
| BLU Tech Consulting Limited | Administrative & support | 2018 |
| Blue Marina Properties Ltd | Real estate | 2023 |
| Boonies Ltd | Other services | 2022 |
| BOW and Crossbones Ltd | Manufacturing | 2016 |
| Bower Trading Limited | Real estate | 2019 |
| BPS FM Ltd | Education | 2021 |
| BPS Kent Limited | Arts & recreation | 2021 |
| BPS Management (Kent) Ltd | Real estate | 2020 |
| Brace Holdings Ltd | Real estate | 2025 |
| Brace Property Ltd | Real estate | 2021 |
| Brains Brands Ltd | Manufacturing | 2019 |
| Bramley Barn Investments Limited | Other services | 2021 |