| Bluebells Forest Children Ltd | Abergavenny | 2026 |
| Bluebells Mental Health Training Ltd | Norwich | 2021 |
| Bluebells Nursery Ltd | Liverpool | 2010 |
| Bluebells Nursery School (JK) Limited | Dorchester | 2010 |
| Blueberry Day Nursery Limited | West Bromwich | 2019 |
| Blueberry Enterprises Limited | South Woodford | 2011 |
| Blueberry Microlearning Ltd | London | 2023 |
| Blueberry Motorsport Ltd | Tonbridge | 2023 |
| Blueberry Nursery Early Learning Organisation Limited | Nottingham | 2001 |
| Blueberry Sigma Ltd | London | 2010 |
| Bluebird L&D Limited | Northallerton | 2026 |
| Bluebird Learning Solutions Limited | London | 2009 |
| Bluebird Music CIC | Bury | 2025 |
| Bluebirds Day Nursery Limited | Dagenham | 2016 |
| Blueblackjam Productions Ltd | London | 2025 |
| Bluebox Learning Ltd | Crawley | 2016 |
| Blueboxt Productions Ltd | Leyburn | 2019 |
| Bluebrick Advisory Limited | Oxford | 2026 |
| Bluebridge Education Limited | London | 2016 |
| Bluedasher Learning Solutions Limited | Bristol | 2019 |
| Bluedot Impact Ltd | London | 2023 |
| Bluefin Swim School Limited | Cambridge | 2020 |
| Bluefins Swimming Ltd | Ringwood | 2024 |
| Bluegrass Training Ltd | London | 2022 |
| Bluejay Wellness CIC | Jarrow | 2021 |
| Bluejoy Ltd | Richmond | 2015 |
| Bluelearning Ltd | Guildford | 2023 |
| Bluelight Consultancy Limited | Knutsford | 2011 |
| Bluelight First AID Ltd | London | 2022 |
| Blueline College Limited | Bradford | 2019 |
| Blueline Plymouth Ltd | Plymouth | 2024 |
| Bluelinetrading Ltd | Manchester | 2025 |
| Blueorkidz Ltd | Purley | 2025 |
| Blueprint Consulting Ltd | Teignmouth | 2011 |
| Blueprint Education Ltd | Brigg | 2015 |
| Blueprint Education Services Limited | Beeston | 2019 |
| Blueprint for ALL | London | 2004 |
| Blueprint Health & Performance Ltd | Wigan | 2026 |
| Blueprint Jump Limited | Hampton | 2013 |
| Blueprint Learning Ltd | High Peak | 2025 |
| Blueprint Outdoor Solutions Ltd | London | 2024 |
| Blueprint Sports Guides Ltd | Staines-Upon-Thames | 2025 |
| Blueprint Surveying Ltd | London | 2022 |
| Blueprint Youth UK Ltd | Littlehampton | 2011 |
| Blues and Bourbon NE Ltd | Newcastle Upon Tyne | 2022 |
| Blues Driving School (Central Bedfordshire) Ltd | Bedford | 2019 |
| Blues Driving School Ltd | Bedford | 2019 |
| Blueshift Education, CIC | London | 2017 |
| Bluesky Simulators Limited | London | 2016 |
| Bluesoundscape Music Ltd | London | 2006 |
| Bluesprings Education Limited | London | 2023 |
| Bluest Blues Ltd | Fakenham | 2024 |
| Bluestone Academy Limited | Birmingham | 2025 |
| Bluestone College Ltd | Huddersfield | 2017 |
| Bluestone GTR Training Ltd | Bridgend | 2026 |
| Bluetack Collective | London | 2004 |
| Bluetree Mentoring CIC | Shrewsbury | 2021 |
| Bluevale Ltd | Bognor Regis | 2026 |
| Bluewater Consultancy and Training Limited | Norwich | 2022 |
| Bluewave Korean Martial Arts Limited | Basingstoke | 2022 |
| Bluewood Training Ltd | Sutton | 2006 |
| Blume Development Ltd | Saffron Walden | 2026 |
| Blume Wellness Limited | London | 2024 |
| Blundell's School | Tiverton | 2000 |
| Blunsdon Pre-School Limited | Swindon | 2016 |
| Blush and Blade Training Academy Ltd | Bolton | 2022 |
| Blush Beauty Academy Ltd | Blyth | 2019 |
| Blute Ltd | London | 2021 |
| Bluuprint CIC | Walsall | 2023 |
| BLW UK Zone a Ltd | London | 2018 |
| Blyth South Beach Surf School CIC | Blyth | 2026 |
| Blyth Tall Ship | Blyth | 2010 |
| Blythe Bridge Day Nursery Ltd | Stoke On Trent | 2014 |
| Blythe Bridge Nursery Group Limited | Stoke-On-Trent | 2024 |
| Blythe Hall Limited | London | 2005 |
| Blythe Healthcare Solutions Limited | Birmingham | 2020 |
| Blythwood Community Nursery Limited | Islington | 2010 |
| BM 2026 Ltd | Workington | 2026 |
| BM 40 Ltd | Newark | 2024 |
| BM Aviation (UK) Ltd | Leeds | 2012 |
| BM Educational Services Ltd | Rotherham | 2020 |
| BM Level UP Limited | London | 2024 |
| BM Training Solutions Ltd | Renfrew | 2011 |
| BM Universal Ltd | Dagenham | 2011 |
| BM Universal Solutions Limited | Luton | 2017 |
| BMA Driving School Ltd | London | 2024 |
| BMA Tuition Ltd | London | 2022 |
| Bmaa P2 Ltd | Milton Keynes | 2020 |
| Bmactive Limited | London | 2022 |
| Bmaf Services Limited | London | 2018 |
| Bmak Ltd | Birmingham | 2022 |
| Bmam Limited | Blackpool | 2013 |
| Bmat Education | Harlow | 2011 |
| Bmat Learning Limited | London | 2022 |
| BMB Training Solutions Ltd | Chichester | 2014 |
| BMC Training and Development Ltd | London | 2017 |
| BMC Training Limited | London | 2019 |
| BME (NW London) Limited | London | 2010 |
| BME United Heritage, Arts & Culture C.I.C. | Birmingham | 2018 |
| BME Volunteers CIC | London | 2019 |