| Bromantics Ltd | Information & communication | 2019 |
| Brook House Clinic Ltd | Other services | 2014 |
| Brooks Defence Ltd | Arts & recreation | 2025 |
| Brothertons Oak Limited | Hospitality | 2018 |
| Brown BAG Cafe Limited | Hospitality | 2007 |
| Brownstone Surveyors Limited | Real estate | 2019 |
| Brunswick Quay (94-98) Management Limited | Real estate | 1985 |
| Brush Ltd | Administrative & support | 2017 |
| Brussels Productions Limited | Information & communication | 2020 |
| Brutor AI Ltd | Information & communication | 2026 |
| Bryce Morgan Limited | Professional & scientific | 2013 |
| Brywells Limited | Administrative & support | 2019 |
| BSB Advisory Ltd | Professional & scientific | 2026 |
| BSG Nexus Ltd | Professional & scientific | 2025 |
| Bspackaging Ltd | Professional & scientific | 2015 |
| BSW Corporate Limited | Hospitality | 2023 |
| BT Equine Ltd | Agriculture & fishing | 2023 |
| BTC Vehicle Rentals Limited | Administrative & support | 2020 |
| Bucklor Property 2 Limited | Real estate | 2020 |
| Bucknell Court Limited | Households | 2007 |
| Bucks Property Care Ltd | Construction | 2024 |
| Bueno Clothing Company Ltd | Wholesale & retail | 2022 |
| Build With Iconic Ltd | Construction | 2024 |
| Building for the Future Wokingham Limited | Health & social care | 2014 |
| Built NOT Born Limited | Arts & recreation | 2023 |
| Bullion LUX Limited | Real estate | 2025 |
| Bundy Consulting Services Limited | Information & communication | 2007 |
| Bunty Kitchens and Bedrooms Limited | Manufacturing | 2021 |
| Burchett Services Limited | Information & communication | 2014 |
| Burden Electrical Limited | Construction | 2009 |
| Burford Court Residents Association (Wokingham) Limited | Households | 1963 |
| Burgersdeck Ltd | Hospitality | 2025 |
| Burghfield Mobile Tyres Ltd | Wholesale & retail | 2026 |
| Burrows Contractors Limited | Agriculture & fishing | 2019 |
| Burrows Machinery Ltd | Wholesale & retail | 2017 |
| Burtea Ltd | Construction | 2018 |
| Busdev Services Limited | Information & communication | 2008 |
| Bush Bedding Limited | Wholesale & retail | 2003 |
| Bushcrafted Interiors Limited | Construction | 2023 |
| Bushcrafted Limited | Construction | 2011 |
| Bushrod Consulting Ltd | Professional & scientific | 2017 |
| Business Consultants Network Ltd | Professional & scientific | 2022 |
| Business Development Advisory Service Ltd | Professional & scientific | 2025 |
| Business of Creatives Ltd | Professional & scientific | 2022 |
| Business Services Group Limited | Construction | 2005 |
| Buy DYE Repair Flooring Solutions Ltd | Wholesale & retail | 2022 |
| Bwki Limited | Arts & recreation | 2015 |
| BY Supercar Limited | Administrative & support | 2005 |
| Bytecrafters Ltd | Information & communication | 2023 |
| Bytesign Consulting Ltd | Information & communication | 2016 |
| Bytewise Software Solutions Ltd | Information & communication | 2006 |
| Byway Consulting Limited | Wholesale & retail | 2016 |
| C & V Mechanics Limited | Wholesale & retail | 2015 |
| C E M Analytical Services Limited | Professional & scientific | 1989 |
| C Mitchell Rail Services Ltd | Professional & scientific | 2013 |
| C R Taylor Consulting Ltd | Professional & scientific | 2016 |
| C Roberts Properties Ltd | Real estate | 2022 |
| C Sharp Holdings Ltd | Administrative & support | 2020 |
| C&H Hamilton Consultancy Limited | Professional & scientific | 2013 |
| C&J Mechanical Limited | Construction | 2019 |
| C&N Advisory LLP | | 2024 |
| C. I. Trading PPE Ltd | Wholesale & retail | 2025 |
| C.E. Jeatt & Sons Limited | Transport & logistics | 1974 |
| C.R. Turner (Watford) Limited | Administrative & support | 1945 |
| C360RED Limited | Information & communication | 2025 |
| C360VXO Limited | Information & communication | 2025 |
| CA2 Limited | Information & communication | 2014 |
| Caam Management Ltd | Extraterritorial | 2011 |
| Cabana Recruitment Ltd | Administrative & support | 2023 |
| Cablecom Investments Limited | Information & communication | 1985 |
| Cablecomm Voice & Data Solutions Limited | Professional & scientific | 2001 |
| CADCRE8 Ltd | Professional & scientific | 2020 |
| Cadeaux Limited | Administrative & support | 1968 |
| CAG Multiforce Services Ltd | Administrative & support | 2024 |
| Caice Limited | Extraterritorial | 2011 |
| Caityse Ltd | Professional & scientific | 2019 |
| Cajun Fredo Ltd | Information & communication | 2022 |
| Cake IT TIL YOU Make IT Ltd | Manufacturing | 2024 |
| Calibso Residential Limited | Real estate | 2021 |
| Call Review Limited | Extraterritorial | 2016 |
| Callimed Ltd | Administrative & support | 2021 |
| CAM Management Consultancy Limited | Professional & scientific | 2019 |
| Camber Spirits Limited | Manufacturing | 2022 |
| Cambria Court Limited | Households | 1982 |
| Camelot Place (Finchampstead)Residents Association Limited | Households | 2006 |
| Camm Ltd | Administrative & support | 2018 |
| Campbell Print Holdings Limited | Professional & scientific | 2008 |
| Campbell Print Limited | Manufacturing | 1997 |
| Camu Art Ltd. | Education | 2010 |
| Canopy Services Limited | Construction | 2004 |
| Canvo Limited | Wholesale & retail | 2025 |
| Capability Costing Limited | Extraterritorial | 2014 |
| Capella Hairdressing Limited | Other services | 2009 |
| Capella Technologies Limited | Information & communication | 2010 |
| Capital Lift Truck Services Limited | Manufacturing | 2005 |
| Capital Paving and Resin Ltd | Construction | 2025 |
| Capital Vehicle Group Ltd | Wholesale & retail | 2026 |
| Car Body Repairs Berkshire Ltd | Wholesale & retail | 2026 |
| Car Deal Limited | Wholesale & retail | 2013 |
| Carbon Bike Repair Limited | Other services | 2014 |