| Baltec (U.K.) Limited | Tadley | 1986 |
| Balti Towers Sauces Ltd | Halesowen | 2021 |
| Baltic Beer Company Ltd | Salford | 2004 |
| Baltic Fleet Brewery Limited | Birkenhead | 2010 |
| Baltic Kitchens & Bedrooms Ltd | Liverpool | 2014 |
| Baltic Nomad Ltd | Royston | 2022 |
| Baltic Refrigeration Ltd | Glasgow | 2022 |
| Baltic Security Systems Ltd | West Drayton | 2020 |
| Baltic Sensei Ltd | Cambridge | 2022 |
| Baltic Works Ltd | Dundee | 2013 |
| Baltic-Kalec Ltd | London | 2021 |
| Baltimore Aircoil Limited | London | 1985 |
| Baltimore Marina Limited | Todmorden | 2019 |
| Baltrawed UK Limited | London | 2025 |
| Baltzersens Ltd | Harrogate | 2011 |
| Balu Solution Limited | Norwich | 2025 |
| Baluba Ltd | London | 2025 |
| Balufab Ltd | Market Drayton | 2022 |
| Baluka Ltd | London | 2026 |
| Balustrade Components UK Limited | Birmingham | 2015 |
| Balustrade UK Limited | Dudley | 2003 |
| Balver Group Ltd | London | 2025 |
| Balvin Electronics Ltd | Tadworth | 2016 |
| Balybebe Ltd | London | 2025 |
| Balé Artisano Limited | Oldbury | 2023 |
| BAM Active Sports Ltd | Chessington | 2018 |
| BAM Active Sports Teamwear Limited | Leatherhead | 2019 |
| BAM BAM Construction Projects Ltd | Newton Abbot | 2021 |
| BAM Building Services Limited | Stoke-On-Trent | 2014 |
| BAM Engineering Ltd | Ruislip, | 2022 |
| BAM Pharma Ltd | Mold | 2025 |
| BAM Productions Ltd. | London | 2015 |
| BAM Seafood Ltd | London | 2025 |
| BAM Wholesale Ltd | Sowerby Bridge | 2023 |
| Bama British Arab Media Academy CIC | London | 2026 |
| Bama Dreamline Ltd | Aberdeen | 2025 |
| Bama Europa UK Limited | Craigavon | 1997 |
| Bama Fabrication Ltd | Weston-Super-Mare | 2023 |
| Bama Foods Limited | Mansfield | 2023 |
| Bama South West Ltd | Ivybridge | 2026 |
| Bamanovation Ltd | London | 2025 |
| Bamap Services Limited | Hereford | 2011 |
| Bamax UK Limited | Great Yarmouth | 2015 |
| Bambaloo Limited | Northampton | 2025 |
| Bambam Products Ltd | Wantage | 2022 |
| Bambar Ltd | Birmingham | 2021 |
| Bambaragk Ltd | Stafford | 2025 |
| Bamberg Supplies Limited | Feltham | 2025 |
| Bambi Air Limited | Birmingham | 2018 |
| Bambi and Rose Ltd | London | 2023 |
| Bambi Bains Ltd | Putney | 2019 |
| Bambinosdoritas Ltd | London | 2025 |
| Bambinou Ltd | London | 2025 |
| Bambizi Ltd | London | 2025 |
| Bamblow Ltd | London | 2025 |
| Bamboo Bakes Ltd | Manchester | 2020 |
| Bamboo Coffee Roasters Limited | Leicester | 2020 |
| Bamboo Print Ltd | Wisbech | 2008 |
| Bamboo Sets Limited | Mitcham | 2025 |
| Bamboo Sports Ltd | London | 2026 |
| Bamboomart London Limited | London | 2023 |
| Bambooze Ltd | Chichester | 2025 |
| Bambotany Ltd | Sevenoaks | 2025 |
| Bambums Limited | Farnworth | 2024 |
| Bambury Metal Fabrications Limited | Bristol | 2002 |
| Bambusa Ltd | Norwich | 2016 |
| Bamd Ltd. | Bicester | 2009 |
| Bames Ltd | Wrexham | 2020 |
| Bamford Blue Hydrogen Limited | Uttoxeter | 2021 |
| Bamford BUS Company Limited | Oxford | 2019 |
| Bamford Croquet Limited | London | 2025 |
| Bamford Gold Hydrogen Limited | Uttoxeter | 2021 |
| Bamford Green Hydrogen Limited | Uttoxeter | 2020 |
| Bamford Hydrogen Limited | Uttoxeter | 2020 |
| Bamford Installations Ltd | Shipley | 2023 |
| Bamford Print Limited | Heywood | 2010 |
| Bamford Pure Hydrogen Limited | Uttoxeter | 2021 |
| Bamford Watch Department Limited | London | 2009 |
| Bamicrafts Ltd | Dartford | 2025 |
| Bamify Ltd | London | 2026 |
| Bampton Design Limited | Witney | 1988 |
| Bampton House Limited | Witney | 2019 |
| Bampton Packaging Limited | Nottingham | 1926 |
| Bams Tech Limited | Birmingham | 2022 |
| Bamyan Jewellery Wholesale Ltd | Edgware | 2023 |
| Bana Water Ltd | Colchester | 2024 |
| Banana Hosiery Limited | London | 2017 |
| Banana Moon Workshop Limited | Birstall | 2008 |
| Banana Peaks Limited | Belfast | 2024 |
| Banana Print Limited | Westcliff-On-Sea | 2026 |
| Banana Scoops Ltd | London | 2019 |
| Banana Tree Studios Ltd | London | 2023 |
| Banana UK Media Ltd | Hitchin | 2011 |
| Banatan Veronica Ltd | Royston | 2026 |
| Banbury Homes and Gardens Limited | Bewdley | 2006 |
| Banbury Litho Limited | Banbury | 1981 |
| Banbury Memorials Limited | Banbury | 2016 |
| Banbury Nameplates Limited | Oxon | 1977 |
| Banbury Plastic Fittings Limited | Banbury | 2000 |
| Banbury Postiche Limited | Banbury | 1970 |