| Bayleigh Limited | Cardiff | 2023 |
| Bayliss and Wilcox Community Support Ltd | Tamworth | 2014 |
| Bayliss Health Ltd | Penarth | 2022 |
| Baylyn Health & Wellbeing Services Limited | Northolt | 2014 |
| Baymade Limited | Barnet | 2007 |
| Baymartades Ltd | Barking | 2019 |
| Baymire Limited | Borehamwood | 2018 |
| Baynes Care UK Limited | Romford | 2022 |
| Bayo Oniye Resources Ltd | Birmingham | 2015 |
| Bayoadedokun Ltd | Belfast | 2024 |
| Bayore Limited | Stanford-Le-Hope | 2024 |
| Bayoumy MED Limited | Ilford | 2021 |
| Baysh Services Limited | Dagenham | 2014 |
| Bayside 119 Limited | Esher | 2025 |
| Bayside Invest & Associates Limited | London | 2020 |
| Bayside Medical Limited | Aylesbury | 2010 |
| Bayside Supported Living Ltd | West Bromwich | 2021 |
| Bayston Doctors Limited | Norwich | 2013 |
| Bayswater Medical Ltd | Lincoln | 2022 |
| Bayswater Medical Services Ltd | Hounslow | 2024 |
| Bayswater Residential & Nursing Homes Limited | Leeds | 2000 |
| Bayswift Limited | London | 1994 |
| Baysworth Medical Consult Limited | Harlow | 2023 |
| Bayt EL Ailah CIC | Stockport | 2025 |
| Bayt Rahah Ltd | Northampton | 2025 |
| Bayt Solutions Ltd | London | 2023 |
| Bayt UL Maqdis Foundation | London | 2010 |
| Baytamor Ltd | London | 2025 |
| Baytree Community Care (London) Limited | London | 1997 |
| Baytree Court Care Limited | North East Lincolnshire, | 2023 |
| Baytree Court Opco Limited | Upminster | 1994 |
| Baytree Health Ltd | Stamford | 2025 |
| Baytrees Homes Limited | Worthing | 1985 |
| Baytt Ltd | Birmingham | 2025 |
| Bayview Care Home Limited | Inverness | 2017 |
| Bayview Care Ltd | Milton Keynes | 2021 |
| Baywater Healthcare UK Limited | Crewe | 2013 |
| Baywood Aesthetics Limited | Bournemouth | 2024 |
| Bazire Medical Limited | Quorn | 2018 |
| Bazline Group Ltd | Wolverhampton | 2025 |
| Bazmi Medical Services Ltd | Nottingham | 2023 |
| Bazrad Reporting Limited | Sunderland | 2024 |
| Bazzy H Limited | Benfleet | 2019 |
| BB & Co Limited | Dumfries | 2012 |
| BB Active Recovery Ltd | Barnsley | 2025 |
| BB Afterschool Club Ltd | Northampton | 2009 |
| BB Care and Training Services Ltd | Orpington | 2018 |
| BB Care Limited | London | 2019 |
| BB Care Services Limited | Blackheath | 2011 |
| BB Caring Services Limited | Birmingham | 2023 |
| BB Children & Family Services Ltd. | Hounslow | 2021 |
| BB Chiropractors Ltd | Beckenham | 2010 |
| BB Clinical Solutions Ltd | Saltburn-By-The-Sea | 2026 |
| BB Collins Consultancy Limited | London | 2011 |
| BB Dental Ltd. | Glasgow | 2019 |
| BB Dermatology Limited | Falmouth | 2016 |
| BB Endodontics Limited | Harrow | 2010 |
| BB Excel Services Ltd | Middlesbrough | 2018 |
| BB Flexcare Solutions Limited | Chesterfield | 2026 |
| BB Health Ltd | Romford | 2025 |
| BB Healthcare Solutions Ltd | Essex | 2015 |
| BB Integrated Medical Solutions Limited | Bristol | 2025 |
| BB IPR Limited | Stanmore | 1997 |
| BB Medical Limited | Hamilton | 2021 |
| BB Medical Services Ltd. | Glasgow | 2003 |
| BB Nannies Ltd | Manchester | 2021 |
| BB Optical Ltd | Darwen | 2013 |
| BB Oral Health Limited | Brighton | 2011 |
| BB Osteopaths Limited | Leicester | 2009 |
| BB Osteopathy (Essex) Limited | Leigh-On-Sea | 2022 |
| BB Podiatry Ltd | Twickenham | 2017 |
| BB Smiles Limited | Stanmore | 2020 |
| BB Support Services Ltd | Lincoln | 2019 |
| BB Vision Limited | London | 2022 |
| BB Wellbeing Limited | Dundee | 2025 |
| Bb&S Limited | Guildford | 2025 |
| Bb-Pharma Limited | London | 2024 |
| BB96 Ltd | London | 2025 |
| BBA NG Limited | Enfield | 2018 |
| BBA Services Ltd | Basingstoke | 2024 |
| Bbab Enterprises Ltd | London | 2023 |
| Bbaha Ltd | Coleraine | 2025 |
| Bbaimpact Limited | West Drayton | 2016 |
| Bbanaesthetics Ltd | Romsey | 2021 |
| BBB Hair Loss Centre Limited | Glasgow | 2024 |
| BBB Inverness Ltd | Inverness | 2024 |
| Bbbp Jena Gynaecology Ltd. | London | 2025 |
| BBC - Blessing Beauty Cosmetics Limited | London | 2022 |
| BBC Care Service Limited | Walton-On-Thames | 2019 |
| BBC Enterprise Limited | Liverpool | 2017 |
| BBCARE10 Ltd | Lydbrook | 2022 |
| Bbdc Limited | Birmingham | 2009 |
| BBE (London) Limited | London | 2014 |
| BBE Health Limited | Brighton | 2020 |
| BBE Homes & Property Ltd | Aylesbury | 2026 |
| Bbfeenix Ltd | Horsham | 2025 |
| BBJ Therapy CIC | London | 2023 |
| Bbjdd Therapy Limited | Birmingham | 2022 |
| BBK Medics Limited | London | 2015 |
| Bblhd Ltd | London | 2021 |