| Built for NOW Limited | Professional & scientific | 2012 |
| Bunford Heights (Yeovil) Management Company Limited | Real estate | 2019 |
| Bunkers Hill (Lincoln) Management Company Limited | Households | 2007 |
| Bunnacrick Consultants Limited | Administrative & support | 2018 |
| Bunny Land and Consultancy Services Ltd | Transport & logistics | 2019 |
| Burbuila Ltd | Administrative & support | 2019 |
| Burdevon Holdings Limited | Real estate | 2020 |
| Burfield Park (Witham ST Hughs) Residents Management Company Limited | Households | 2016 |
| Burlington Avenue Ltd | Real estate | 2024 |
| Burlington Court (Aigburth) Management Company Limited | Households | 2003 |
| Burlington Court RTM Company Limited | Real estate | 2017 |
| Burlmere Consulting Limited | Professional & scientific | 2010 |
| Burlton Cottages and Spa Limited | Other services | 2017 |
| Burlton Manor Equestrian Limited | Arts & recreation | 2018 |
| Burlton Manor Holdings Limited | Real estate | 2024 |
| Burlton Manor Limited | Hospitality | 2020 |
| Burnett & Roper Property Ltd | Real estate | 2025 |
| Burnside (Market Drayton) Management Limited | Real estate | 2005 |
| Burrell Design Limited | Professional & scientific | 2004 |
| Burton Court Residents Association Limited | Households | 2001 |
| Burway Garage Ltd | Wholesale & retail | 2005 |
| Burway Ltd | Professional & scientific | 2023 |
| Bury Green Freehold Limited | Households | 2007 |
| Bushill Electrical Services Ltd | Construction | 2012 |
| Business Coach Network Limited | Administrative & support | 2019 |
| Business Funding Services Ltd | Financial services | 2008 |
| Business Growth Management Ltd | Wholesale & retail | 2020 |
| Business Reporter Limited | Administrative & support | 2023 |
| Butchers Mews Management Company Limited | Households | 2012 |
| Buteo Communications Ltd | Professional & scientific | 2025 |
| Butlers Court (Smethwick) NO 1 Management Limited | Households | 2013 |
| Buttercross Meadows (Brigg) Management Company Limited | Households | 2025 |
| Butterfly Table Tennis Therapy Limited | Arts & recreation | 2024 |
| Butterworth Medical Limited | Professional & scientific | 2025 |
| BY Design & Build Ltd | Construction | 2025 |
| BY the Fire Limited | Wholesale & retail | 2013 |
| Byron Property Co. Ltd | Real estate | 2024 |
| Byworth Gundogs & Terriers Ltd | Agriculture & fishing | 2020 |
| C & J Kerr Logistics Limited | Transport & logistics | 2019 |
| C & S (Chirk) Limited | Wholesale & retail | 2006 |
| C a Shepherd Limited | Professional & scientific | 2020 |
| C and L Leisure Limited | Hospitality | 2018 |
| C and O Architects Limited | Professional & scientific | 2023 |
| C Evans Commercial Limited | Manufacturing | 2010 |
| C J & L M Davies Ltd | Agriculture & fishing | 2011 |
| C J DE Klerk Anaesthetic Services Ltd | Health & social care | 2013 |
| C J Griffiths LLP | | 2012 |
| C J Millar Limited | Wholesale & retail | 2001 |
| C J Wildbird Foods Limited | Manufacturing | 1987 |
| C Jones Electrical Services Limited | Construction | 2016 |
| C Jones Hair Ltd | Other services | 2026 |
| C L Llangadfan Limited | Professional & scientific | 1999 |
| C P Carpentry & Timber Framing Ltd | Manufacturing | 2016 |
| C P Evans Transport Limited | Transport & logistics | 2021 |
| C P Motorsport Limited | Arts & recreation | 2017 |
| C Pugh Financial Services Limited | Financial services | 2011 |
| C R Plumbing & Heating 2011 Ltd | Construction | 2015 |
| C S Carpentry (Shropshire) Limited | Manufacturing | 2024 |
| C W Research Limited | Information & communication | 2009 |
| C&J Wolstenholme Limited | Hospitality | 2026 |
| C-Fury Limited | Manufacturing | 2001 |
| C-Z Transport Ltd | Transport & logistics | 2021 |
| C.A.S. Estates Limited | Real estate | 2001 |
| C.F Valeting & Detailing Ltd | Administrative & support | 2022 |
| C.H.G. Management Company Limited | Extraterritorial | 2015 |
| C.L.C.A Assistance Limited | Transport & logistics | 2019 |
| C.L.C.A Company Limited | Health & social care | 2012 |
| C.L.C.A Holdings Limited | Financial services | 2017 |
| C.L.C.A Properties Limited | Real estate | 2026 |
| C.P. Witter Limited | Manufacturing | 1978 |
| C2 Recruitment Limited | Administrative & support | 2008 |
| C21 Shrewsbury Limited | Hospitality | 2025 |
| Cadell Court Management Company Limited | Households | 1983 |
| Cadmus (Shropshire) Ltd | Administrative & support | 2019 |
| Cadmus Academy Ltd | Education | 2026 |
| Cadmvs Holdings Ltd | Financial services | 2024 |
| Cadogan Gate Residents Limited | Households | 1997 |
| Cadwallader Developments Limited | Real estate | 2012 |
| CAE Celyn Estate Management Company Limited | Households | 2019 |
| CAE Mair Llanfair Dyffryn Clwyd Management Company Limited | Real estate | 2018 |
| Caergwrle Medical Practice Ltd | Health & social care | 2023 |
| Caersws Bike Park Limited | Arts & recreation | 2023 |
| Cafe Fortune Limited | Wholesale & retail | 2013 |
| Cafe on the Severn Limited | Hospitality | 2021 |
| Cakes by Lizzie Limited | Hospitality | 2024 |
| Calamar Creative Ltd | Information & communication | 2025 |
| Calcos Place Management Company Limited | Households | 2007 |
| Calderdale Management Company Limited | Real estate | 2006 |
| Cales Reach (Wincanton) Management Company Limited | Households | 2019 |
| Calibre Commercial Ltd | Health & social care | 2013 |
| Call the Shots Ltd | Hospitality | 2014 |
| Callaghan Fine Paintings Limited | Wholesale & retail | 2002 |
| Callaghan Framing Ltd | Manufacturing | 2020 |
| Callaghan Stoneworks Limited | Construction | 2026 |
| Callard and Bowser Limited | Manufacturing | 2015 |
| Callow Limited | Construction | 2005 |
| Callow Secure Destruction Limited | Water & waste | 2021 |
| Calluna Graphix Ltd | Professional & scientific | 2021 |
| Callwood Wilson Consultants Ltd | Professional & scientific | 2025 |
| Calm Environments Limited | Construction | 2026 |