| Bolifa Ltd | London | 2019 |
| Bolin Webb Ltd | Stamford | 2009 |
| Bolitho Construction Ltd | Liskeard | 2019 |
| Bolle Drinks Limited | London | 2024 |
| Bollegraaf U.K. Limited | Rugeley | 1989 |
| Bolley Brewing & Distillation Ltd | Leicestershire | 2020 |
| Bollhoff Limited | Kingston Upon Hull | 2006 |
| Bollin Dale Engineering Limited | Macclesfield | 1956 |
| Bollin House Limited | 6 Minshull Street | 1938 |
| Bollington Brewing Co. Limited | Macclesfield | 2008 |
| Bollington Joinery Limited | Macclesfield | 2010 |
| Bollington Printshop Ltd | Macclesfield | 2018 |
| Bollitherm Limited | Cardiff | 2026 |
| Bolly Ltd | Reigate | 2023 |
| Bollywood Foods Limited | Bath | 2003 |
| Bolmeros Foods Limited | London | 2023 |
| Bolney Wine Estate Ltd | Haywards Heath | 2003 |
| Bolshie Ltd | London | 2012 |
| Bolsover Designs Ltd | Chesterfield | 2017 |
| Bolsover Optical Limited | Leicester | 2022 |
| Bolster Defence Security, Ltd | London | 2022 |
| Bolster Lifestyle Ltd | Hinckley | 2023 |
| Bolt & NUT Manufacturing Holdings Limited | Coseley | 2019 |
| Bolt & NUT Manufacturing Limited | Birmingham | 2008 |
| Bolt Aerospace Ltd | Milton Keynes | 2025 |
| Bolt and Bearing (London) Limited | Ilford | 1982 |
| Bolt Appliances Limited | London | 2022 |
| Bolt Computers Limited | Newark | 2018 |
| Bolt Cracker Limited | Altrincham | 2011 |
| Bolt Deli Ltd | Belfast | 2025 |
| Bolt King Ltd. | Telford | 2015 |
| Bolt on Bits Limited | Cleckheaton | 2005 |
| Bolt Renewables Ltd | Manchester | 2020 |
| Bolt the Door Ltd | Bolton | 2021 |
| Bolt ‘N’ Go Limited | Harlow | 2024 |
| Bolt-On Renewables Ltd | Manchester | 2025 |
| Boltcare Limited | Huddersfield | 2021 |
| Boltdown Holdings Ltd | Birmingham | 2024 |
| Boltdown Power Press Repairs Limited | Birmingham | 1997 |
| Bolted Ltd | Darlington | 2026 |
| Boltight Limited | Walsall | 1999 |
| Bolting Direct Limited | Wolverhampton | 2012 |
| Bolton Bedrooms Ltd | Bolton | 2019 |
| Bolton BG UK Limited | London | 2022 |
| Bolton Bros (Footwear and Orthotics) Ltd | Newcastle Upon Tyne | 2017 |
| Bolton Bros. (Surgical Shoe Makers) Limited | Newcastle Upon Tyne | 1952 |
| Bolton Gate 2021 Limited | Bolton | 2020 |
| Bolton Gate Company Limited | | 1939 |
| Bolton Granite Ltd | Telford | 2025 |
| Bolton Hemming Limited | Timperley | 1974 |
| Bolton Lock Company Limited | Bolton | 1998 |
| Bolton Medical Foams & Rubber Ltd | Bolton | 2021 |
| Bolton Plant Sales and Repair Limited | Bolton | 2019 |
| Bolton Plastic Components Limited | Nottingham | 1983 |
| Bolton Premiumequipment Ltd | Bolton | 2019 |
| Bolton Roofracks Ltd | Bolton | 2004 |
| Bolton Sheetmetal Ltd | Bolton | 2011 |
| Bolton Surgical Limited | Sheffield | 1982 |
| Bolton Textiles Ltd | Bolton | 2024 |
| Bolts & Blades Ltd | Lisburn | 2020 |
| Boltsoft Solutions Ltd | Taunton | 2018 |
| Boltun Homes Limited | London | 2025 |
| Bolzgrobob's Various Magical Services Limited | Huddersfield | 2023 |
| BOM Engineering Ltd | Leeds | 2000 |
| BOM Tech Ltd. | Shoreham-By-Sea | 2017 |
| BOM Technology Co., Ltd | Stafford | 2022 |
| Bomas Dentlab Ltd | Uckfield | 2017 |
| Bomat House Ltd | London | 2018 |
| Bomb UP Airsoft & Ttpc Ltd | Mildenhall | 2017 |
| Bombacious Ltd | Southampton | 2022 |
| Bombardier Ltd. | Beckenham | 2023 |
| Bombardier Services (UK) Limited | London | 1998 |
| Bombardier Transportation (Gautrain) UK Limited | Derbyshire | 1995 |
| Bombardilopavo Ltd | Bristol | 2025 |
| Bombay Bespoke Limited | Blandford Forum | 2025 |
| Bombay Foods Limited | London | 2004 |
| Bombay Halwa Limited | London | 1973 |
| Bombay Mulgi Ltd | London | 2022 |
| Bombay Street Kitchen Ltd | Coventry | 2016 |
| Bombay to Ahmedabad Limited | Wembley | 2024 |
| Bombay Wala Ltd | High Wycombe | 2020 |
| Bombe Body Ltd | London | 2021 |
| Bomber Bikeworks Limited | Bristol | 2022 |
| Bombero Padel UK Limited | Hemel Hempstead | 2025 |
| Bombi Ltd | London | 2026 |
| Bombiix Ltd | Hessle | 2017 |
| Bombina Glass Limited | Sandhurst | 2016 |
| Bombo Doughnuts Ltd | Ramsgate | 2023 |
| Bombones Limited | Swanscombe | 2022 |
| Bombons Ltd | Wallington | 2018 |
| Bombs Scents Ltd | Redhill | 2021 |
| Bomen Steel Ltd | Tincleton | 2022 |
| Bomet UK Ltd | Chipping Norton | 2009 |
| Bomford Turner Limited | Evesham | 1904 |
| Bomic Limited | | 2006 |
| Bomiefada Foods & Events Limited | Newcastle Upon Tyne | 2025 |
| Bommer Design Limited | Southville | 2012 |
| Bomonti Limited | London | 2025 |
| BON Accord Engineering Ltd | London | 2015 |
| BON Accord Granite Ltd. | Ellon | 1997 |