| Bulmer & Lumb Limited | Bradford | 2001 |
| Bulmer & Lumb Package Dyers Limited | Bradford | 1982 |
| Bulmer & Lumb Top Dyers Limited | Bradford | 1982 |
| Bulmer Brick Cutting Limited | Colchester | 2015 |
| Bulmer Estates Limited | Camberley | 2007 |
| Bulsara Limited | Hyde | 2010 |
| Bulut Yachting Ltd | Blackpool | 2024 |
| Bulwell Tool & Plant Limited | Nottingham | 1999 |
| Bumble & Beam Limited | Doncaster | 2026 |
| Bumble 2020 Ltd | Bolton | 2020 |
| Bumblebee Executive Coaching Services Ltd | Yatton | 2023 |
| Bumblebee Leisure Limited | Melton | 2014 |
| Bumbletoft Limited | Beccles | 2020 |
| Bumf Ltd | London | 2015 |
| Bump & Bounce Ltd | Nuneaton | 2025 |
| Bumps Accident Repair Centre Ltd | Bristol | 2022 |
| Bumpy Design Limited | Sunderland | 2011 |
| Bumpyback Limited | Hyde | 2022 |
| Bumz and Tumz Fitness Ltd | Towcester | 2010 |
| Bunaes Limited | London | 2023 |
| Bunato Trading Company Ltd | Rotherham | 2022 |
| Buncher and Haseler Limited | Kings Norton | 1911 |
| Bundle Software Limited | Northampton | 2022 |
| Bungay House Ltd | Great Yarmouth | 2003 |
| Bunge UK Dormant Limited | Thame | 2001 |
| Bungee Digital Ltd | Poole | 2013 |
| Bunity Limited | London | 2018 |
| Bunney UK Limited | Watford | 2012 |
| Bunns Lane Works Limited | London | 1990 |
| Bunny & Hedgehog Ltd | Felixstowe | 2023 |
| Bunting & Sons (1820) Limited | Colchester | 2014 |
| Bunting Build Ltd | Kings Lynn | 2013 |
| Bunton Enterprises Limited | Brentwood | 2006 |
| Bunzl Group Services Limited | London | 1979 |
| Bunzl Overseas Holdings (NO.4) Limited | London | 2016 |
| Bunzl Pension Trustees Limited | London | 1992 |
| Bunzl Plastics Limited | London | 1986 |
| Bunzl Properties Limited | London | 1950 |
| Buoni Saluti Limited | London | 2019 |
| Buoo Limited | Salford | 2015 |
| Buoyant Investments Limited | London | 2004 |
| Bupa Care Services Limited | London | 1992 |
| Bupa Healthcare Services Limited | London | 2007 |
| Bupa Home Healthcare Pension Scheme Trustee Limited | London | 2021 |
| Bupa Limited | London | 1988 |
| Bupa Pension Scheme Trustees Limited | London | 2011 |
| Bupa Secretaries Limited | London | 1996 |
| Buratti Group Holdings Limited | Stratford-Upon-Avon | 2007 |
| Burbage Joinery Limited | Bristol | 2011 |
| Burberry Isaacs Company NO 1 Limited | London | 2013 |
| Burberry Properties Limited | Sheffield | 2003 |
| Burch Road 1965 Limited | Gravesend | 2014 |
| Burchell Edwards (Midlands) Limited | Leighton Buzzard | 2008 |
| Burchett Buildings Ltd | Eastbourne | 2012 |
| Burchin Yachting Limited | London | 2022 |
| Burcom Properties Limited | Cookham | 2012 |
| Burd Consulting Limited | Kilsby | 2022 |
| Bureau Club Limited | Essex | 2007 |
| Bureau of International Certification Ltd | Manchester | 2025 |
| Bureau Technical Recruitment Limited | Hessle | 2011 |
| Bureau Veritas Hs&E Limited | Birmingham | 1990 |
| Burford Contracting and Consulting Limited | Chipping Norton | 2014 |
| Burford Financial Services Limited | Brentwood | 2014 |
| Burford Highway Hotel Property Company Limited | Chipping Norton | 1977 |
| Burgar Hill Wind Farm Limited | Swindon | 1994 |
| Burgate Ltd | Whitstable | 2012 |
| Burger and Slice Ltd | Birmingham | 2023 |
| Burger Heist Edinburgh Ltd | Edinburgh | 2021 |
| Burges Salmon (Scotland) Limited | Edinburgh | 2014 |
| Burgess Commercial Ltd | Rotherham | 2023 |
| Burgess Hodgson 1 Limited | Canterbury | 2026 |
| Burgess Hodgson 2 Limited | Canterbury | 2026 |
| Burgess Hodgson 3 Limited | Canterbury | 2026 |
| Burgess Industrial Silencing Limited | Leicestershire | 2004 |
| Burgess Management Limited | Edinburgh | 2009 |
| Burgess Park Administration Limited | London | 2018 |
| Burgess Park Nominees NO 1 Limited | London | 2018 |
| Burgess Park Nominees NO 2 Limited | London | 2018 |
| Burgess Procurement Services Ltd | London | 2022 |
| Burgess Property Projects Ltd | Radlett | 2018 |
| Burgess Tractors Ltd | Norwich | 2025 |
| Burgh Private Hire Limited | Edinburgh | 2023 |
| Burgh Street (Management) Limited | King'S Lynn | 1988 |
| Burgoyne Consultants Limited | London | 1984 |
| Burgoynes Limited | Hereford | 2001 |
| Burgtech Holdings Ltd. | Beckenham | 2021 |
| Burhill Golf Centres Limited | Surrey | 1983 |
| Burhouse Beads Limited | Huddersfield | 2015 |
| Burial Yonderstar Sound & Music Limited | London | 2021 |
| Burj Consultancy Ltd | Wells | 2016 |
| Burke Bros (Commercials) Limited | Cheltenham | 1949 |
| Burke Bros Moving Group Limited | Wolverhampton | 1988 |
| Burkes of Cornascriebe Limited | Portadown | 1999 |
| Burl & BOW Limited | Leatherhead | 2019 |
| Burland Close 1966 Limited | Runcorn | 2014 |
| Burland Coaches Limited | Crewe | 2018 |
| Burland Group Limited | Crewe | 2018 |
| Burlands Tyres Limited | Crawley | 2013 |
| Burleigh Time-Share Limited | Stevenage | 1982 |
| Burlen Fuel Systems Limited | Salisbury | 2011 |