| Brother 2 Brother WE Stand C.I.C. | Luton | 2026 |
| Brotherapy Ltd | Luton | 2025 |
| Brotherhood Fitness Ltd | Gateshead | 2022 |
| Brotherhood in Arms CIC | Cheltenham | 2025 |
| Brotherhood Medical Services Ltd | Bradford | 2014 |
| Brotherhood Mens Groups CIC | Kettering | 2025 |
| Brotherhood of Dads CIC | Denbigh | 2026 |
| Brothers (Scunthorpe) Ltd | Scunthorpe | 2014 |
| Brothers and Sisters Keeper C.I.C. | London | 2018 |
| Brothers Autism Social Enterprise Community Interest Company | Downpatrick | 2023 |
| Brothers in Harmony CIC | Birmingham | 2024 |
| Brothers Medical 2 Limited | Nottingham | 2016 |
| Brothers of Charity Services (Scotland) | Galashiels | 2007 |
| Brothers Y Medical Ltd | Darlington | 2025 |
| Brotox Aesthetics Limited | Bolton | 2019 |
| Brotox Yorkshire Ltd | Wakefield | 2023 |
| Brou Limited | Canterbury | 2012 |
| Brough Allergy Ltd | London | 2018 |
| Brough Manor Care Home Limited | Brough | 2008 |
| Brough Physical Therapy Clinic Limited | East Yorkshire | 2006 |
| Brough Village Company Limited | Magherafelt | 2019 |
| Broughton & Beech Ltd | Kendal | 2014 |
| Broughton After School Club | Broughton Road | 2003 |
| Broughton Associates Ltd | Oldham | 2020 |
| Broughton Care Limited | Sutton Coldfield | 2004 |
| Broughton Dental Practice Limited | Broughton Astley | 2017 |
| Broughton Hall Care Limited | Basingstoke | 2014 |
| Broughton Health Alliance Primary Care Network Ltd | Salford | 2024 |
| Broughton Lodge (Dalton-In-Furness) Management Company Limited | Dalton-In-Furness | 1987 |
| Broughton Lodge Care Home Limited | Potters Bar | 2016 |
| Broughton Medical Limited | Cranbrook | 2013 |
| Broughton MK Dental Limited | Birmingham | 2023 |
| Broughton Park Ambulance Services Ltd | Manchester | 2016 |
| Broughton Street Healthcare Ltd | Livingston | 2020 |
| Broughty Ferry Practice Ltd | Dundee | 2017 |
| Brovelyn Care Agency Limited | Stratford | 2022 |
| Brovelyn Childcare Services Limited | Stratford | 2024 |
| Brovig Health Ltd | London | 2018 |
| Brow Design Studio Limited | Poole | 2018 |
| BROW4 CIC | Huntingdon | 2021 |
| Browd Medical Limited | London | 2010 |
| Browfield Care Home Limited | Wilmslow | 2019 |
| Browfield Care Limited | Wilmslow | 2020 |
| Browfield Residential Home Limited | Bury | 2001 |
| Brown & Brown Ltd | Selkirk | 2019 |
| Brown & Elisara Empowered Parents Ltd | Clydebank | 2025 |
| Brown & Primrose Ltd | St. Neots | 2023 |
| Brown & White Dunmow Ltd | Wickford | 2021 |
| Brown Anaesthetics Ltd | Woodbridge | 2019 |
| Brown and Wenman Eyecare Limited | Watford | 2016 |
| Brown and White (Opticians) Limited | Luton | 1929 |
| Brown Bear Ltd | Hamilton | 2026 |
| Brown Consultancy (Halifax) Ltd | Halifax | 2014 |
| Brown Diamond Limited | Bexley | 2015 |
| Brown Edge Care Ltd | Widnes | 2024 |
| Brown Edge Community Inn Community Interest Company | Stoke-On-Trent | 2022 |
| Brown Edge House Limited | St. Helens | 2013 |
| Brown EYE Radiology Limited | Edinburgh | 2017 |
| Brown Glass Ltd | Preston | 2020 |
| Brown Green and Blue Ltd | Banstead | 2025 |
| Brown Horse Care Services Ltd | London | 2016 |
| Brown Psychology Ltd | London | 2022 |
| Brown R US Limited | Bristol | 2025 |
| Brown Rice Holdings Ltd | St Helens | 2015 |
| Brown Therapist Network Ltd | Birmingham | 2025 |
| Brownbill Associates Limited | London | 1999 |
| Browne Fostering Limited | Loughborough | 2019 |
| Browne Psychological Services Ltd | London | 2026 |
| Browne's Dental Surgery Limited | Ellesmere Port | 2014 |
| Brownerts Health Care Ltd | London | 2015 |
| Browne’S Aesthetics Ltd | Ellesmere Port | 2025 |
| Brownfox Quality Care Limited | Leicester | 2012 |
| Brownhill Care Limited | London | 2006 |
| Brownhills and Walsall Wood Fellowship | Walsall Wood Walsall | 2007 |
| Browning Fawkner Limited | Poole | 2018 |
| Browning Medicolegal Associates Limited | Swansea | 2016 |
| Brownlee Performance Limited | Liverpool | 2017 |
| Brownlow Enterprises Limited | Potters Bar | 1996 |
| Brownlow in the Community CIC | Liverpool | 2025 |
| Browns Care Limited | Hitchin | 2022 |
| Browns Case Management Ltd | Wigan | 2019 |
| Browns Clinic Limited | Sevenoaks | 2014 |
| Browns Community Services CIC | Staines-Upon-Thames | 2015 |
| Browns CS Ltd | London | 2020 |
| Browns Family Enterprise Limited | Bury St. Edmunds | 2020 |
| Browns Healthcare Ltd | London | 2021 |
| Browns Medical Provider Ltd | Liverpool | 2022 |
| Browns Pharmacy Healthcare Limited | | 2003 |
| Browns Physiotherapy and Wellness Limited | Congleton | 2022 |
| Browns R US Ltd | Bristol | 2025 |
| Browns Short Break Respite Limited | St. Helens | 2010 |
| BROWNS66 Limited | Birmingham | 2024 |
| Brownscombe Surrey Limited | Godalming | 2021 |
| Broxbourne Alliance PCN Ltd | Potters Bar | 2021 |
| Broxbourne Dental Care Limited | Watford | 2009 |
| Broxburn DP Limited | Broxburn | 2021 |
| Broxburn Optical Ltd | South Queensferry | 2003 |
| Broxburn Smile Centre Ltd | Broxburn | 2021 |
| Broxson Medical Limited | Leyland | 2022 |
| BRP Health Ltd | Hitchin | 2022 |