| Basi Dental Limited | Nottingham | 2021 |
| Basi Global Limited | London | 2018 |
| Basic - Brain and Spinal Injury Centre Limited | Greater Manchester | 1985 |
| Basic Care Support Ltd | London | 2020 |
| Basic Corner Ltd | London | 2019 |
| Basic Healthcare Ltd | Redhill | 2019 |
| Basicord Healthcare Services Ltd | Harlow | 2025 |
| Basiduk Limited | Enfield | 2016 |
| Basihope Limited | Lincoln | 2025 |
| Basil and Bassam Ltd | Nottinghamshire | 2015 |
| Basil IKE Limited | Mitcham | 2018 |
| Basil Mizrahi Prosthodontics Limited | London | 2010 |
| Basil Ridha Neurology Limited | Brighton | 2025 |
| Basil Street Practice Limited | London | 2013 |
| Basildon Care Ltd | Basildon | 2022 |
| Basildon Community Transport Service Ltd | Basildon | 2012 |
| Basildon First Primary Care Network Ltd | Basildon | 2019 |
| Basildon Health Limited | Southend-On-Sea | 2020 |
| Basildon Mind | Basildon | 2004 |
| Basileia Homes Ltd | Dartford | 2024 |
| Basileus Medical Ltd | Glasgow | 2021 |
| Basilex Ltd | London | 2024 |
| Basilthanoon Medical Services Limited | Sheffield | 2025 |
| Basin Lane Aesthetics Limited | Tamworth | 2012 |
| Basing Hand and Shoulder Clinic Limited | Southampton | 2017 |
| Basingstoke Mencap Services | Basingstoke | 2000 |
| Basingstoke Multicultural Forum | Basingstoke | 2012 |
| Basingstoke Surgical Technology Ltd. | London | 1995 |
| Basingstoke Wellness Ltd. | Basingstoke | 2017 |
| Basirat OMO Healthcare Ltd | Bolton | 2020 |
| Basireddy Medical Ltd | Derby | 2017 |
| Basis Health UK Limited | London | 2025 |
| Basis Yorkshire Ltd | Leeds | 2007 |
| Basit & Co Limited | Keighley | 2006 |
| Basit-Medical Limited | Kington | 2007 |
| Basithussain Ltd | Luton | 2022 |
| Bask Childcare Ltd | Gourock | 2024 |
| Baskind Gastro Limited | Leeds | 2023 |
| Baskind Health Limited | Leeds | 2017 |
| Baslow Edge Nursery Limited | Hope Valley | 2017 |
| Baslow Physiotherapy Ltd | Bakewell | 2018 |
| Basma Beauty Centre Ltd | London | 2020 |
| Basmat Khair Organisation Limited | London | 2025 |
| Basmm Ltd | London | 2020 |
| Basra Medics UK Ltd | Chertsey | 2013 |
| Basri and Partners Ltd | Gateshead | 2021 |
| Bass MED Ltd | Leeds | 2018 |
| Bass Optics Ltd | Isleworth | 2023 |
| Bass Orthodontics Limited | Warrington | 2009 |
| Bass Talking Therapies Ltd | Leicester | 2023 |
| Bassaam Ltd | Brough | 2024 |
| Bassaco Village Ltd | Grays | 2021 |
| Bassai Limited | Birmingham | 2018 |
| Bassdave Homes Limited | Manchester | 2024 |
| Bassdent Ltd | Manchester | 2024 |
| Basseghi Limited | Eastbourne | 2015 |
| Basseko Limited | Bristol | 2022 |
| Bassemsaleh Limited | Westcliff-On-Sea | 2021 |
| Bassett Dental Practice Limited | Southampton | 2007 |
| Bassett Physiotherapy Ltd | Holmfirth | 2024 |
| Bassi Aesthetics Academy Ltd | Leicester | 2025 |
| Bassi Consultancy Ltd | Slough | 2020 |
| Bassi Medical Ltd | Shustoke | 2015 |
| Bassie Boutique Ltd | Peterborough | 2025 |
| Bassily Ophthalmic Services Ltd | Scunthorpe | 2017 |
| Bassini’S Soup Kitchen for the Homeless and Vulnerable People Limited | Harrow | 2022 |
| Bassira Ltd | Edinburgh | 2022 |
| Bassy Care Ltd | London | 2024 |
| Basta UK Limited | Croydon | 2014 |
| Bastide Devco Ltd | London | 2017 |
| Bastide Homecare Development Ltd | London | 2016 |
| Bastion Associates Limited | Morpeth | 2019 |
| Bastion Business Limited | Crowborough | 2021 |
| Bastion Medical Ltd | Newcastle Upon Tyne | 2015 |
| Bastion Pharmacy Limited | Bristol | 2008 |
| Basu Consultancy Limited | Nottingham | 2013 |
| Basu Limited | Gainsborough | 2022 |
| Basudev Enterprise Ltd | Birmingham | 2010 |
| Basus Private Limited | Rickmansworth | 2022 |
| Basuta Ophthalmic Services Limited | Derby | 2009 |
| Basuto Medical Practice Limited | Harrow | 2025 |
| BAT Inc Ltd | Stourport On Severn | 2020 |
| Bata Care Limited | London | 2016 |
| Batach Limited | Kington | 2009 |
| Batchley Support Group - Redditch Communities | Redditch | 2003 |
| Batchwell Limited | Gillingham | 2021 |
| Batdj Ltd | Larne | 2022 |
| Bate and Sons Care Ltd | London | 2015 |
| Bate Soila Ltd | Leeds | 2019 |
| Bate Solutions Ltd | Manchester | 2023 |
| Bateleur HC Ltd | Leicester | 2019 |
| Batelli Surgical Ltd | Caterham | 2023 |
| Bateman & Knight Limited | Croydon | 2019 |
| Bateman Dentolegal Ltd | Stourbridge | 2012 |
| Bateman Kildare Ltd | Colchester | 2010 |
| Bateman Opticians Ltd | Cardiff | 2013 |
| Bateman Wellbeing Limited | Bournemouth | 2021 |
| Batepl Investments Limited | Wolverhampton | 2015 |
| Bateren Therapy Ltd | Liverpool | 2026 |
| Bates Clear 2 Hear Ltd | Stafford | 2025 |