| Breathe Safety Limited | Christchurch | 2003 |
| Breathe We'Ve GOT This Ltd | Oakham | 2023 |
| Breathe With Evelyn Ltd | Tranent | 2024 |
| Breathe With Kelly Ltd | London | 2026 |
| Breathe Yoga Retreats Ltd | Huddersfield | 2025 |
| Breathewell.Life Ltd | Saffron Walden | 2010 |
| Breathing in Peace C.I.C. | Newbury | 2019 |
| Breathing Space Consultants Limited | Wolverhampton | 2013 |
| Breathing Space Wellness Limited | Westcliff-On-Sea | 2019 |
| Breathless Beauty Ltd | Croydon | 2026 |
| Breathwork Meditace Ltd | Bournemouth | 2021 |
| Breau Limited | London | 2025 |
| Brebs Ltd | London | 2020 |
| Brecan RO Ltd | Enfield | 2025 |
| Brecan UK Ltd | Enfield | 2023 |
| Breces Management Ltd | Glasgow | 2013 |
| Brechin Railway Preservation Society Limited | Brechin | 2023 |
| Breckenridge Technologies Limited | Marlow | 2009 |
| Breckland Crematorium Ltd | King'S Lynn | 2017 |
| Brecknock Wildlife Trust Limited | Bridgend | 1964 |
| Brecon & Dean Limited | London | 2024 |
| Brecon Beacons Tourism | Brecon | 2009 |
| Brecon Buzz CIC | Brecon | 2021 |
| Brecon Dust Busters Limited | Brecon | 2024 |
| Brecon Nail NM Ltd | Brecon | 2023 |
| Brecon Nails Ltd | London | 2014 |
| Brecon Research Group Ltd | Orpington | 2024 |
| Bredbury Limited | Stockport | 2005 |
| Bredhurst Bathrooms Ltd | Chatham | 2004 |
| Bredon Hill Flooring Limited | Evesham | 2018 |
| Breds Capital UK Limited | London | 2015 |
| Breds III Capital UK Limited | London | 2017 |
| Breds III Debt Portfolio Holding Co Limited | London | 2017 |
| Breds III UK Supervisory Limited | London | 2017 |
| Breds IV Capital UK Limited | London | 2019 |
| Breds IV Debt Portfolio Holding Co Limited | London | 2019 |
| Breds IV UK Supervisory Limited | London | 2019 |
| Breds UK Supervisory Limited | London | 2015 |
| Bredyal Ltd | London | 2021 |
| Bree Merryn Art Limited | Keighley | 2016 |
| Bree-Zee Boys Ltd | London | 2025 |
| Breeches and Leather Uniform Fanclub Limited | London | 2016 |
| Breeders Elite Studbook for Irish & European Sporthorses Ltd. | Crossgar | 2009 |
| Breen Equestrian Limited | Haywards Heath | 2007 |
| Breen Launderette Limited | Bishop'S Stortford | 2025 |
| Breevio Limited | London | 2019 |
| Breeze & Bloom Wellness by Victoria Ltd | Gillingham | 2025 |
| Breeze Beauty Salon Ltd | Dorchester | 2019 |
| Breeze Drycleaner (NI) Ltd | Belfast | 2012 |
| Breeze Environmental Limited | Salisbury | 2016 |
| Breeze Film CIC | London | 2024 |
| Breeze House Company Limited | Leek | 2014 |
| Breeze Landscape Architects Limited | London | 2010 |
| Breeze Studios Limited | Ayr | 2026 |
| Breezee Barber Ltd | London | 2020 |
| Breezy Car Wash Limited | London | 2024 |
| Breezy Days Ltd | Birmingham | 2023 |
| Breezy Trading Limited | Ilford | 2018 |
| Breezyway Limited | Wiltshire | 1998 |
| Breezzy Barbers Ltd | London | 2024 |
| Breimega Ltd | London | 2005 |
| Breitstone Enterprise Ltd | Dewsbury | 2022 |
| Breizh Rooster Limited | Solihull | 2017 |
| BREJ1 Ltd | Stroud | 2021 |
| Brelx Whitening Ltd | London | 2023 |
| Bremholdings Limited | Preston | 2023 |
| Bren Illustrations Ltd Co. Limited | Birmingham | 2013 |
| Bren Pauls Beauty Ltd | Newmarket | 2025 |
| Brenaco Limited | London | 2001 |
| Brenclare Ltd | Runcorn | 2016 |
| Brend Apple Clinic Limited | Huddersfield | 2015 |
| Brenda Feldman Ltd | London | 2017 |
| Brenda Lukwago Ltd | London | 2018 |
| Brenda Nominees Limited | Salford | 2018 |
| Brenda Reid & Chris Dickson Limited | Edinburgh | 1996 |
| Brenda Road Golf & Leisure Limited | Hartlepool | 1998 |
| Brendaesthetics Limited | Watford | 2019 |
| Brendale Enterprises Limited | Loughton | 2019 |
| Brendan Fowles Ltd | London | 2010 |
| Brendan Hope Ltd | Grantham | 2021 |
| Brendan Mccarthy Editor Ltd | Salford | 2015 |
| Brendan Miskella Limited | Littleborough | 2009 |
| Brendan O'Sullivan Hair and Beauty Ltd | Old Amersham | 2017 |
| Brendanas Ltd | Telford | 2019 |
| Brendino Kellino Ltd. | Stockport | 2015 |
| Brendog Services Ltd | Uxbridge | 2023 |
| Brendon Cook 2 Ltd | Chichester | 2017 |
| Brendon Hand Car Wash Ltd | Brandon | 2011 |
| Brengme Hospitality Limited | Hythe | 2025 |
| Brenjax Services Ltd | Barrow In Furness | 2024 |
| Brennan Building Limited | Stourbridge | 2012 |
| Brennan Competency Assessment Ltd | Colchester | 2014 |
| Brennan Consult Ltd | Stockport | 2013 |
| Brennan Fitness Ltd | Bishop'S Stortford | 2026 |
| Brennan Therapy Ltd | Bristol | 2023 |
| Brennan Williams Enterprises Ltd | Askern | 2024 |
| Brennan Wilson Limited | Merseyside | 2015 |
| Brennan&Co. Ltd | Glasgow | 2022 |
| Brent and Harrow Chamber of Commerce Ltd | Harrow | 1997 |
| Brent Cross Association Limited | Sandwich | 1975 |