| Bart Physio Ltd | London | 2023 |
| Bart's City Life Saver | London | 1998 |
| Bart's Medical Services Ltd | Mansfield | 2021 |
| Bartek Zaniewski Ltd | London | 2015 |
| Barth Orthodontics Limited | Cardiff | 2008 |
| Bartha People of ALL Nations Community Project CIC | London | 2025 |
| Bartholamew Lodge Nursing Home Limited | Smethwick | 1991 |
| Bartholomew Way Clinic Ltd | | 2004 |
| Bartlett Chiropractic Limited | Epsom | 2002 |
| Bartlett Futures Ltd | Badminton | 2026 |
| Bartoc Limited | Luton | 2022 |
| Barton Court Care Home Limited | Twickenham | 2017 |
| Barton Dental Centre Limited | Watford | 2010 |
| Barton DS Ltd | Burton-On-Trent | 2014 |
| Barton Farm Holdings Limited | Holsworthy | 2023 |
| Barton Halo Care Ltd | Stevenage | 2026 |
| Barton Hills Facial Aesthetics and Healthcare Limited | Stevenage | 2019 |
| Barton House Care Limited | Slough | 2021 |
| Barton Lodge Ltd | Harrow | 2023 |
| Barton Oncology Limited | Harrow | 2004 |
| Barton Optical Ltd | Barton-Upon-Humber | 2015 |
| Barton Orthopaedics Ltd | Nantwich | 2012 |
| Barton Place Limited | Milton Keynes | 2002 |
| Barton Psychology Ltd | Daventry | 2025 |
| Barton Social Care Staffing Ltd | Worthing | 2019 |
| Bartox Aesthetics Ltd | Wigan | 2018 |
| Bartram Lifecycle Limited | Macclesfield | 2023 |
| Barts Charity | London | 2010 |
| Barty House Nursing Home Limited | Slough | 2000 |
| Baruaeyes Limited | Solihull | 2017 |
| Baruah Healthcare Ltd | London | 2025 |
| Baruch Care Ltd | Letchworth Garden City | 2022 |
| Baruch Child Stars Ltd | London | 2015 |
| Baruch Health Ltd | Manchester | 2023 |
| Barush Limited | Nottingham | 2005 |
| Barusya Company Ltd | Southend-On-Sea | 2008 |
| Baruwa Healthcare Limited | Wolverhampton | 2018 |
| Barvic Healthcare and Recruitment Ltd | Coventry | 2017 |
| Barwaaqo Care Ltd | Cardiff | 2024 |
| Barwaqa Relief Organisation | London | 2006 |
| Barwick Dental Ceramics and Laboratory Services Limited | Stockton-On-Tees | 2017 |
| Barwick Solutions Ltd | Birmingham | 2015 |
| Baryalay Khan Ltd | Dundee | 2025 |
| Baryksdent Services Limited | Aberdeen | 2013 |
| Barz Health Care Limited | London | 2020 |
| Barzenji Limited | Ilford | 2026 |
| BAS Aesthetics Ltd | London | 2022 |
| BAS Care Limited | Northampton | 2023 |
| BAS Dental Ltd | Orpington | 2020 |
| BAS Dermatology Limited | Birmingham | 2016 |
| BAS Kumari Ltd | Aldershot | 2022 |
| Basal Holdings Ltd | Watford | 2024 |
| Basamma ENT Limited | Newport | 2020 |
| Basat & SON Ltd | Stoke On Trent | 2018 |
| Basateen Limited | Manchester | 2025 |
| Basbar Limited | London | 2021 |
| Basby Limited | Luton | 2019 |
| Basch Helps CIC | London | 2020 |
| Baschurch Care Limited | Wolverhampton | 2013 |
| Basclef Specialist Healthcare Ltd | Harlow | 2010 |
| Basco Consultancy Ltd | Glasgow | 2018 |
| Bascug Healthcare Limited | Norbury | 2014 |
| Base 7 Ltd | Cardiff | 2026 |
| Base Beauty Ltd | Borehamwood | 2012 |
| Base Ltd | Birmingham | 2019 |
| Base Medical Ltd | London | 2026 |
| Base Nutrition Ltd | Portsmouth | 2024 |
| Base Psychology Ltd | Whitley Bay | 2024 |
| Base Tanning & Wellness Studio Limited | Lancashire | 2026 |
| Basecamp Childcare Community Interest Company | London | 2024 |
| Basecare Line Ltd | Swindon | 2019 |
| Baseda Group Ltd | Harlow | 2022 |
| Baseer Limited | Bolton | 2022 |
| Basegreen Academy Ltd | Holmfirth | 2004 |
| Baseline Care Ltd | London | 2024 |
| Baseline Health Limited | London | 2024 |
| Baseline Kids Ltd | Sheffield | 2024 |
| Baseline Outreach CIC | St. Albans | 2025 |
| Baseline Restoration Ltd | Pontypridd | 2012 |
| Baselink Care Limited | Grimsby | 2003 |
| Basem Muammar Limited | Solihull | 2017 |
| Basem Services Ltd | London | 2015 |
| Basementheads CIC | Bury St Edmunds | 2020 |
| Baseobs Care Ltd | Corby | 2014 |
| Baseville Consultants Limited | Coventry | 2024 |
| Basfo Services Limited | London | 2019 |
| Basford Healthcare Limited | London | 2019 |
| Bash Balogun Services Limited | Coventry | 2014 |
| Basha Pharma Ltd | Norwich | 2022 |
| Bashad Healthcare Solutions (BHS) Limited | Birmingham | 2020 |
| Bashar Funeral Services Ltd | Newcastle Upon Tyne | 2015 |
| Bashar Moghaddam Limited | Chatham | 2017 |
| Basharat Care Homes Ltd | Nottingham | 2022 |
| Basheer Occupational Health Ltd | Manchester | 2011 |
| Bashfod International Limited | Milton Keynes | 2018 |
| BASHIMAM90 Ltd | Coventry | 2024 |
| Bashir Business Venture Limited | Dagenham | 2015 |
| Bashra Aesthetics Ltd | Bristol | 2022 |
| Bashtu Care and Support Services Ltd | London | 2023 |
| Basi Care Limited | London | 2021 |