| Berthold Technologies (UK) Limited | Harpenden | 2001 |
| Berthon Boat Company Limited | Lymington | 1877 |
| Berthon RIB Solutions Limited | Lymington | 2018 |
| Berthoud Sprayers Limited | Boston | 1986 |
| Berticus Ortho Consulting Limited | Coventry | 2023 |
| Bertie & Bessie Investments Limited | Leeds | 2014 |
| Bertie's Bakery Limited | Magherafelt | 2019 |
| Bertie's Cheesecake Ltd | St. Neots | 2024 |
| Bertin Exensor Limited | Basingstoke | 1988 |
| Bertisa Ltd | Birmingham | 2024 |
| Bertola Home Studio Ltd | Halifax | 2024 |
| Bertopack Services Limited | Exmouth | 1974 |
| Bertotti Limited | London | 2015 |
| Bertram Dudley & Co Ltd | Aberdare | 2018 |
| Bertram Mechanical Ltd | Invergordon | 2024 |
| Bertrand Agencies Ltd | London | 2020 |
| Berts Bakery Limited | Sale | 2023 |
| Berts Candles Ltd | Basildon | 2026 |
| Bertwistles (Bakers) Limited | Lancs | 1965 |
| Beruni Ltd | Blackburn | 2022 |
| Berus Links Ltd | London | 2024 |
| Berwin Industrial Polymers Limited | Dukinfield | 1957 |
| Berwyn OFF Grid Energy Ltd | London | 2024 |
| Berwyn Racing Ltd | London | 2025 |
| Beryl Guitars Ltd | Kidderminster | 2008 |
| Beryl Smart Technology UK Limited | London | 2021 |
| Beryllos Jewellery Limited | London | 2022 |
| BES Electrical Fire & Security Ltd | Bolton | 2012 |
| BES Fire and Security Ltd | Bolton | 2016 |
| BES Marine Welding Ltd | Harrow | 2024 |
| Besa Building Limited | Blackpool | 2025 |
| Besafe Cybersecurity Ltd | Morden | 2025 |
| Besan Brands Limited | Wellingborough | 1993 |
| Besaucy Ltd | Brighton | 2019 |
| Besbike Ltd | Margate | 2020 |
| Bescore Energy Ltd | London | 2023 |
| Besh Facilities Ltd | London | 2026 |
| Besharp Ltd | Bingley | 2024 |
| Beside the Seaside Cafe Ltd | Walton On The Naze | 2026 |
| Besjoe Limited | Borehamwood | 2024 |
| Besoul Ltd | London | 2024 |
| Besp-Oak Structures Limited | Huddersfield | 2016 |
| Bespak Europe Limited | King'S Lynn | 1998 |
| Bespak HC Limited | Cheshire | 2018 |
| Bespak Limited | Crewe | 2024 |
| Bespin Research Ltd | Bristol | 2017 |
| Bespoak Carpentry and Joinery Ltd | Stockport | 2025 |
| Bespoak Creations Limited | Newbury | 2012 |
| Bespoak Designs Ltd | Newton Abbot | 2012 |
| Bespoak Living Ltd | Market Harborough | 2020 |
| Bespoco Innovations Limited | Birmingham | 2022 |
| Bespoke & Oak Co. Ltd | Abergavenny | 2012 |
| Bespoke (Midlands) Limited | Wolverhampton | 2005 |
| Bespoke 24K Gold Ltd | London | 2024 |
| Bespoke 3 Fabrications Ltd | Redditch | 2022 |
| Bespoke @ Berko Ltd | Much Wenlock | 2020 |
| Bespoke Aerospace Limited | London | 2021 |
| Bespoke Airconditioning Ltd | Hayling Island | 2015 |
| Bespoke Alterations Limited | London | 2026 |
| Bespoke Aluminium Doors Ltd | Barnsley | 2022 |
| Bespoke Aluminium Manufacturing Ltd | Winchester | 2021 |
| Bespoke Aluminium Systems Limited | Birmingham | 2026 |
| Bespoke and Batch Engineering Limited | Oswestry | 2016 |
| Bespoke Architectural Aluminium Ltd | Broadstairs | 2021 |
| Bespoke Architectural Aluminum Ltd | Margate | 2017 |
| Bespoke Architectural Fabrications Ltd | Bishop Auckland | 2020 |
| Bespoke Atelier Limited | Glasgow | 2010 |
| Bespoke Automation and Control Services Ltd | Leeds | 2017 |
| Bespoke Aviation Ltd | London | 2022 |
| Bespoke Bakes of Mortimer Ltd | Reading | 2021 |
| Bespoke Bar Manufacturers UK Ltd | St. Helens | 2019 |
| Bespoke Barber Ltd | Preston | 2018 |
| Bespoke Barriers Ltd | Stourbridge | 2025 |
| Bespoke Beauty Construction Ltd | Sheerness | 2020 |
| Bespoke Bedrooms & Kitchens Limited | Hayes | 2018 |
| Bespoke Bindery Ltd | Alfreton | 2025 |
| Bespoke Biscuit Club Ltd | Hassocks | 2021 |
| Bespoke Blind and Curtain Specialists Ltd | Norwich | 2015 |
| Bespoke Boats Limited | Worcester | 2010 |
| Bespoke Bodies Ltd | Warrington | 1999 |
| Bespoke Botanicals Preservation Ltd | Orpington | 2022 |
| Bespoke British Boxes Limited | Milton Keynes | 2014 |
| Bespoke British Pens Limited | Stratford-Upon-Avon | 2014 |
| Bespoke Broadway Kitchens Ltd | Smethwick | 2020 |
| Bespoke Bronzing Solutions Ltd | Halesowen | 2021 |
| Bespoke Build Building and Joinery Services Ltd | Loughborough | 2021 |
| Bespoke Buildings Limited | Hereford | 2007 |
| Bespoke Builds (EC) Limited | Ely | 2026 |
| Bespoke Built in Furniture Ltd | Harlow | 2017 |
| Bespoke Business Management Limited | Bradford | 2020 |
| Bespoke by Baskerville Ltd | Hale | 2024 |
| Bespoke by Nature Interiors Ltd | Harrogate | 2022 |
| Bespoke by Smith & Brock Ltd | London | 2025 |
| Bespoke by Stephanie Ltd | Suffolk | 2019 |
| Bespoke Cabinet Makers Limited | Norwich | 2010 |
| Bespoke Cabinets Ltd | Benfleet | 2023 |
| Bespoke Cabins & Joinery Ltd | Stoke-On-Trent | 2025 |
| Bespoke Cabins and Containers NW Ltd | Liverpool | 2025 |
| Bespoke Cabins and Studios Ltd | Walton-On-Thames | 2026 |
| Bespoke Campervan Competitions Ltd | Weymouth | 2025 |