| Bahnasawi Ltd | Newcastle Upon Tyne | 2025 |
| Bahoo Limited | Sale | 2021 |
| Bahram Limited | Somerset | 2007 |
| Bahu Medics Ltd | Wembley | 2022 |
| BAHVENTURE25 Limited | Manchester | 2023 |
| Bahy Medical Ltd | Bradford | 2025 |
| BAI Long Limited | London | 2009 |
| Baiarda Harris Limited | Henley On Thames | 2016 |
| Baibabs Ltd | Leicester | 2022 |
| Baichas Ltd | Gillingham | 2019 |
| Baid.Org.Uk Ltd | Cardiff | 2012 |
| Baidoocare Ltd | London | 2026 |
| Baig Enterprises Ltd | London | 2025 |
| Baig Locums Ltd | Birmingham | 2007 |
| Baig Pharma Ltd | Rochdale | 2018 |
| Baige UK Limited | Essex | 2016 |
| Baiju Kothari Ltd | Altrincham | 2022 |
| Baila Khan Incorporated Ltd | Maidstone | 2017 |
| Bailamo Medical Ltd | Barnet | 2019 |
| Baildon Childcare Co-Operative Ltd. | Bradford | 1997 |
| Baildon Dental Centre Limited | Bingham | 2008 |
| Baildon Dental Services Limited | Bingham | 2007 |
| Baildon Physiotherapy Limited | Shipley | 2014 |
| Baile ARD1 Limited | London | 2019 |
| Baile Chlarc Psychology Ltd | Glasgow | 2025 |
| Bailey Bears Sensory DEN CIC | Ashbourne | 2023 |
| Bailey Dobson Ltd | York | 2022 |
| Bailey Investing Limited | Godalming | 2021 |
| Bailey Medical Limited | Withington | 2009 |
| Bailey Optometry Limited | Leigh On Sea | 2003 |
| Bailey Ventures Ltd | Salford | 2019 |
| Bailey's Bumblebees Ltd | Chichester | 2021 |
| Bailey, Booth and Massingham Ltd | Norwich | 2017 |
| Baileycare Ltd | Stoke-On-Trent | 2024 |
| Baileyshealthperformance Ltd | Clevedon | 2023 |
| Bailham Psychological Services Limited | Northampton | 2009 |
| Bailie Orthopedics Limited | Belfast | 2020 |
| Bailiwick Botanicals (UK) Limited | Hertford | 2022 |
| Baillieston Community Care | Glasgow | 1996 |
| Baillieston Dental Care Limited | Glasgow | 2014 |
| Bainazs Ltd | Basildon | 2018 |
| Baincare Ltd | Harthill | 2023 |
| Baines Care Limited | Chatham | 2018 |
| Baines Healthcare Ltd | Bedford | 2024 |
| Baines Medical Services Ltd | Twywell | 2014 |
| Bains Foundation | Wolverhampton | 2009 |
| Bains Healthcare Limited | Glasgow | 2005 |
| Bains Optical Healthcare Limited | Cannock | 2015 |
| Bains Pharmacy Ltd | Cannock | 2002 |
| Bains Therapy Ltd | Leicester | 2025 |
| Bains Trading Limited | Cannock | 2025 |
| Bains Trust | Wolverhampton | 2021 |
| Bainsford Foot Clinic Limited | Wishaw | 2006 |
| Bainton Medical Limited | Manchester | 2026 |
| Baipho Therapy Ltd | London | 2007 |
| Baipothaimassage Limited | St. Albans | 2019 |
| Bairavi Ltd | Derby | 2024 |
| Baird Digital LAB Solutions Limited | Leeds | 2023 |
| Baisel Care Limited | Harrow | 2020 |
| Bait AL Hubb Ltd | London | 2026 |
| Bait Elzool Community C.I.C. | London | 2024 |
| Baith-Ul-Ilm C.I.C. | Birmingham | 2024 |
| Baithoon Dent Limited | Waltham Forest | 2025 |
| Baitul Huzan Scotlan Ltd | Motherwell | 2025 |
| Baiyeshova Limited | Birmingham | 2025 |
| BAJ Care Service Limited | Nottingham | 2019 |
| BAJ Diagnostics Ltd | Scunthorpe | 2019 |
| Bajaard Ltd | Leeds | 2023 |
| Bajaj Practice Ltd | London | 2024 |
| Bajan Limited | London | 2012 |
| Bajekal Health Limited | London | 2014 |
| Bajis Medical Services Limited | Glasgow | 2025 |
| Bajolmedicals Ltd | Chatham | 2023 |
| Bajwa Healthcare Ltd | Leicester | 2022 |
| Bajwa Surgical Ltd | Lutterworth | 2018 |
| Bajwadoc Limited | Newport | 2017 |
| Baka Chiropractic Limited | Dumfries | 2008 |
| Bakalis Fetal and Maternal Care Ltd | London | 2018 |
| Bakbik Holdings Limited | Maldon | 2024 |
| Bakea Ltd | Reading | 2022 |
| Baked Sauna Ltd | Penryn | 2025 |
| Bakeer Ltd | Bournemouth | 2019 |
| Baker & Baker Medical Consultancy Ltd | Beckenham | 2017 |
| Baker & Co Practice Ltd | Cirencester | 2022 |
| Baker & Joy Community Interest Company | London | 2013 |
| Baker & Wyld Anaesthetic Services Limited | Otley | 2014 |
| Baker Associate Services Limited | Newquay | 2016 |
| Baker Baker Ltd | Shrewsbury | 2019 |
| Baker Clinical Ltd | Middlesbrough | 2020 |
| Baker Health Consulting Limited | Seaton | 2014 |
| Baker Medicolegal Ltd | Ottery St. Mary | 2022 |
| Baker Oral Health Ltd | Virginia Water | 2007 |
| Baker Orthopaedics Ltd | Bristol | 2013 |
| Baker Psychology Limited | Middleton | 2026 |
| Baker Surgical Limited | Wrexham | 2010 |
| Baker&Co Live in Care Ltd | London | 2025 |
| Bakerly's Medical Ltd | Tyldesley | 2019 |
| Bakewell Cottage Care Home Limited | Bakewell | 2015 |
| Bakewell Paige Ltd | Tewkesbury | 2019 |
| Bakewell Physiotherapy Group Ltd | Bakewell | 2009 |