| 1-5 Rodney Place Presinct Management Company Limited | Real estate | 2004 |
| 115 Severn Road Management Ltd | Real estate | 2022 |
| 170 Wells Road Management Limited | Households | 2010 |
| 20-20 Accounts Ltd | Administrative & support | 2016 |
| 20-20 Stocks Ltd | Administrative & support | 2016 |
| A&E Autocare Limited | Wholesale & retail | 2023 |
| Aardvark Occupational Health Ltd | Professional & scientific | 2009 |
| Aawear Limited | Wholesale & retail | 2017 |
| Aayillah Care Ventures Limited | Financial services | 2025 |
| ABC Mental Health Support Ltd | Health & social care | 2025 |
| Abigail Westrup Limited | Manufacturing | 2014 |
| Accelerate Sport Ltd | Professional & scientific | 2014 |
| Access Assist Limited | Administrative & support | 2025 |
| Ace Defence Limited | Administrative & support | 2011 |
| Acrogymnastics Community Interest Company | Health & social care | 2011 |
| Adventure Bound South West Limited | Arts & recreation | 2024 |
| Agea Digital Ltd | Information & communication | 2025 |
| Agile People Innovations Limited | Professional & scientific | 2024 |
| Aimee's Wine House Limited | Wholesale & retail | 2009 |
| Albatross Property Company Limited | Real estate | 2001 |
| Alexander MP Limited | Real estate | 2015 |
| ALL Construction Services UK (Acs-Uk) Ltd | Construction | 2023 |
| ALL Seasons Window Cleaning Co. Ltd | Administrative & support | 2022 |
| Allden Assets Limited | Professional & scientific | 2012 |
| ALP Construction Ltd | Construction | 1997 |
| ALP Property Investments Limited | Real estate | 1999 |
| Alpaca Properties Limited | Real estate | 2018 |
| Alstone CT Farm Ltd | Agriculture & fishing | 2023 |
| Amended Journey Limited | Administrative & support | 2019 |
| AMH Imports Ltd | Construction | 2015 |
| AMM Electrical Ltd | Extraterritorial | 2024 |
| Andelis Lettings Ltd | Real estate | 2025 |
| Anderson Woodward Properties Limited | Real estate | 2019 |
| Andrew IAN Gardiner Ltd | Information & communication | 2012 |
| ANS Investments Limited | Real estate | 2001 |
| Antomia Property Services Limited | Real estate | 2002 |
| Anzoff Ltd | Wholesale & retail | 2010 |
| AP Agricultural Contractors Limited | Agriculture & fishing | 2026 |
| API Garage Doors Ltd | Construction | 2025 |
| Applied Finishings Ltd | Construction | 2022 |
| Apuljack Electronics Ltd | Manufacturing | 2014 |
| Ariel Property Limited | Real estate | 2025 |
| Arien Signs Limited | Manufacturing | 2024 |
| Arif & Co Solicitors Ltd | Professional & scientific | 2021 |
| Asbg Investments Ltd | Real estate | 2021 |
| Ashborne Ltd | Professional & scientific | 2008 |
| Aspen Enterprises Limited | Information & communication | 1995 |
| Aspire Stone Fabrications Ltd | Construction | 2016 |
| Aspire@Rossholme Ltd | Health & social care | 2021 |
| Auckland House Limited | Real estate | 2016 |
| Aurovian Limited | Manufacturing | 2025 |
| Avalon Camps 2017 Limited | Other services | 2017 |
| AWC Concreting & Groundwork’S Ltd | Construction | 2024 |
| B & J Hall Limited | Professional & scientific | 2016 |
| Ball Fire Protection Limited | Professional & scientific | 2005 |
| Baoson Property Investments Ltd | Real estate | 2026 |
| Barrtech Control Systems Ltd | Professional & scientific | 2024 |
| Bason Bridge Brewing Company Ltd | Manufacturing | 2018 |
| Baytree Builders Limited | Construction | 2008 |
| Baytree Consultancy Ltd | Information & communication | 2025 |
| Bb.Com Tyres Ltd | Wholesale & retail | 2025 |
| Beethoven Property Capital Limited | Real estate | 2024 |
| Berrow Court (NO 2) Management Company Limited | Households | 2011 |
| Bespoke Manufacturing Ltd. | Manufacturing | 2003 |
| Bevells Estates Ltd | Households | 2020 |
| Bevells Homes Ltd | Construction | 2020 |
| Bevells Ltd | Real estate | 2015 |
| Bionex Cleaning and Decontamination Specialist Ltd | Administrative & support | 2026 |
| Birds and Words Limited | Arts & recreation | 2004 |
| Black-Ram Recycling Limited | Water & waste | 2005 |
| Black-Ram Renewables Ltd | Real estate | 2015 |
| Blackmead Properties Limited | Real estate | 1997 |
| Blossie Florals Ltd | Agriculture & fishing | 2025 |
| Blue Horseshoe Property Ltd | Real estate | 2011 |
| Bodex Productions & Entertainment Limited | Arts & recreation | 2025 |
| BOW Acoustics Limited | Professional & scientific | 2022 |
| Brand Capital Holdings Limited | Professional & scientific | 2023 |
| Branded Cups Ltd | Hospitality | 2014 |
| Brandfit Group Ltd | Construction | 2024 |
| Brandfit Ltd | Construction | 2024 |
| Breath Capital Partners Ltd | Financial services | 2026 |
| Breath Capital Partners Management Ltd | Real estate | 2026 |
| Brent Engineering Company Limited | Manufacturing | 2007 |
| Brent Farms Limited | Agriculture & fishing | 2014 |
| Brent Knoll Limited | Real estate | 2014 |
| Briarwood Janes Holdings & Co Ltd | Financial services | 2022 |
| Briarwood Products Limited | Construction | 1994 |
| Briarwood Supplies Ltd | Wholesale & retail | 2021 |
| Brickburry Limited | Construction | 2022 |
| Bridge END Cottages Ltd | Administrative & support | 2012 |
| Bridge VET Limited | Professional & scientific | 2013 |
| Brooke's Jewellery Limited | Manufacturing | 2025 |
| Brue Networks Ltd | Professional & scientific | 2023 |
| Brue Property Limited | Real estate | 2025 |
| Bryant Rentals Ltd | Real estate | 2023 |
| Bubbleai Limited | Information & communication | 2025 |
| Buncombes Garage Limited | Wholesale & retail | 1978 |
| Burnham Golf Range Limited | Arts & recreation | 2022 |
| Burnham Portable Toilet Hire Limited | Other services | 1992 |
| Burnham Waste Limited | Water & waste | 1997 |