| Bootble Ltd | Slough | 2025 |
| Booth Anaesthesia & Medical Services Ltd | Manchester | 2017 |
| Booth Care Ltd | Bolton | 2026 |
| Booth Community Care Limited | Bolton | 2024 |
| Booth Dental Limited | Southport | 2008 |
| Booth Enterprises (South West) Limited | Newton Abbot | 2001 |
| Booth VRT Limited | Bristol | 2000 |
| Boothington Ltd | Shepherds Bush | 2016 |
| Boothstown Dent Ltd | Manchester | 2022 |
| Boothstown Village Hall Association | Manchester | 2012 |
| Boots & Brambles Forest School Ltd | Nottingham | 2021 |
| Boots Healthcare Limited | Sidcup | 2014 |
| Boots Hearingcare Limited | Llandudno | 1964 |
| Booty Call CIC | London | 2025 |
| Booyah Agency Ltd | London | 2016 |
| Bop-Me Ltd | Waltham Cross | 2012 |
| Bopharm Ltd | Limavady | 2016 |
| Boptics Limited | Cardiff | 2010 |
| Bora Aesthetic Ltd | Worthing | 2019 |
| Boranthaimassage Ltd | Peterborough | 2024 |
| Bordado Ltd | Harrow | 2022 |
| Bordent Limited | Selkirk | 2015 |
| Border Health Alliance Limited | Hereford | 2024 |
| Border Physiotherapy Clinic Ltd | Galashiels | 2014 |
| Border Valleys Healthcare Ltd | Lockerbie | 2025 |
| Border Women's AID Ltd | Hawick | 2011 |
| Borderline Personality Disorder Collective CIC | Bristol | 2024 |
| Borders Alternative Addictions CIC | Jedburgh | 2019 |
| Borders Doula Ltd | Gordon | 2024 |
| Borders Independent Advocacy Service | Borders | 2005 |
| Borders Local Medical Committee Limited | Innerleithen | 2021 |
| Borders Occupational Therapy Ltd | Melrose | 2023 |
| Borders Orthodontics Ltd. | Galashiels | 2008 |
| Borders Psychological Services Ltd | Peebles | 2025 |
| Bordervale Limited | South Ockendon | 2022 |
| Bordesley East PCN Limited | Birmingham | 2023 |
| Bordesley Green Centre Ltd | Birmingham | 2025 |
| Bordesley Village DP Ltd | Birmingham | 2021 |
| Bordila Ltd | Manchester | 2007 |
| Bordon Dental Centre Ltd | Reading | 2018 |
| Bordwalk Consulting Ltd | Upminster | 2022 |
| Bore Street Dental Practice 2019 Limited | Lichfield | 2019 |
| Bore Street Dental Practice Limited | Lichfield | 2014 |
| Boreb Health Care Limited | Manchester | 2025 |
| Borehamwood Dental Practice Ltd | Borehamwood | 2010 |
| Borehamwood Ortho Clinic Limited | Borehamwood | 2009 |
| Boreland Youth Care Ltd | Northampton | 2024 |
| Boresa Services Limited | London | 2013 |
| Boring Wells | Belfast | 2009 |
| Borisa Solutions Limited | Barnsley | 2014 |
| Borja Support Ltd | Fareham | 2015 |
| Borlah Care Ltd | Manchester | 2020 |
| Borland Orthopaedics Ltd | Gateshead | 2025 |
| Borley Medical Ltd | Cardiff | 2017 |
| Borma Healthcare Ltd | Wolverhampton | 2023 |
| Born Digital Health Ltd | Newcastle Upon Tyne | 2019 |
| Born for a Purpose Ltd | Reading | 2022 |
| Born Medical Consultancy Limited | Tonbridge | 2013 |
| Born to BE Alive CIC | Glasgow | 2023 |
| Born to Care Ltd | Coventry | 2026 |
| Born to Empower Ltd | London | 2021 |
| Born to Explore Ltd | Northampton | 2026 |
| Born to Ltd | Benfleet | 2020 |
| Born to Move Ltd | Berkshire | 2006 |
| Born to Perform Care Services Ltd | Northampton | 2021 |
| Born to Perform Dance School Ltd | Northampton | 2020 |
| Born to Swim Ltd | Stanmore | 2005 |
| Born to WIN (BTW) Limited | Dagenham | 2022 |
| Bornagainfurniture CIC | Halifax | 2023 |
| Bornefit Ltd | Redruth | 2014 |
| Bornel Care Limited | Birmingham | 2011 |
| Bornipete Limited | Carshalton | 2013 |
| Bornitah Limited | Dudley | 2024 |
| Bornwise Ltd | East Grinstead | 2025 |
| Boroikandi Welfare Association UK Limited | Dagenham | 2025 |
| Borough Care Services Limited | Cheshire | 1991 |
| Borough Crown and Bridge Limited | Charlton | 2002 |
| Borough Dental Limited | Harrow | 2020 |
| Borough Gym and Fitness Ltd | London | 2022 |
| Boroughbridge Chiropody & Podiatry Ltd | York | 2026 |
| Boroughbridge Manor Limited | London | 2010 |
| Boroughlea Limited | London | 2012 |
| Borowin Ltd | Manchester | 2025 |
| Borrelli Ltd | Poulton-Le-Fylde | 2022 |
| Borrill Health Care Ltd | Doncaster | 2023 |
| Borrowash Dental Care Limited | Nottingham | 2024 |
| Borsara Smiles Limited | Leicester | 2023 |
| Borthong Ltd | Eastleigh | 2019 |
| Borthwick Industries Ltd | South Shields | 2013 |
| Bortlian Care Services Ltd | London | 2022 |
| Bortlian Homecare Ltd. | Erith | 2023 |
| BOS Eyecare Limited | Manchester | 2005 |
| Bosa Enterprise Limited | Gillingham | 2012 |
| Bosa Healthcare Ltd | Bedford | 2021 |
| Bosab Healthcare Limited | Manchester | 2023 |
| Bosaik Limited | Milton Keynes | 2018 |
| Bosal Care Limited | Manchester | 2025 |
| Bosamai Co. Limited | Thornton Heath | 2012 |
| Bosana Ltd | South Ockendon | 2023 |
| Bosanquet Care Ltd | Liverpool | 2019 |