| Azrooh Ltd | Tring | 2009 |
| Azsam Limited | Ingatestone | 2017 |
| Aztec CKM Limited | Birmingham | 2013 |
| Aztec Day Services Limited | Rochester | 2021 |
| Aztech Healthcare Ltd | Manchester | 2025 |
| Azthetics Ltd | Weston-Super-Mare | 2018 |
| AZU Pharma Limited | Bolton | 2025 |
| Azuber Limited | Anglesey Road | 2025 |
| Azuchi UK Limited | Stevenage | 2025 |
| Azuh Limited | Ashford | 2019 |
| Azukacare Ltd | London | 2024 |
| Azukile Healthcare Services Ltd | Sheffield | 2019 |
| Azul Care Ltd | Farnham | 2022 |
| Azuleti Health Ltd | London | 2026 |
| Azur Health Limited | Tonbridge | 2017 |
| Azura SMG Ltd | Eastbourne | 2019 |
| Azuramed Ltd | Preston | 2025 |
| Azure Care Group Ltd | London | 2017 |
| Azure Care Ltd | Chatham | 2019 |
| Azure Dental Clinic Ltd | Formby | 2021 |
| Azure Health and Medical Ltd | Birmingham | 2022 |
| Azure Health Ltd | Neston | 2019 |
| Azure Medica Limited | Bristol | 2024 |
| Azure Octadent Limited | Derby | 2024 |
| Azure Surgical Limited | Plymouth | 2023 |
| Azure Therapy and Wellness Centre Ltd | North Shields | 2024 |
| Azurea Care Limited | Hitchin | 2023 |
| Azurebecca Limited | Birmingham | 2023 |
| Azuris Health Limited | Sunderland | 2018 |
| Azurite Health Care Limited | Walsall | 2020 |
| Azurvista Limited | Harlow | 2006 |
| Azuta Ltd | Manchester | 2026 |
| AZW Healthcare Ltd | Birmingham | 2021 |
| AZW Ltd | Manchester | 2020 |
| Azyazfaz Ltd | Romford | 2021 |
| Azym Healthcare Limited | Blackburn | 2011 |
| Azza CAP Ltd | London | 2026 |
| Azzabi Medical Limited | Newcastle Upon Tyne | 2019 |
| Azzam Khalaf Plastics Ltd | Manchester | 2025 |
| Azzawi MED Ltd | London | 2024 |
| Azzura Care Ltd | London | 2025 |
| Azzura Medical Limited | Brighton | 2024 |
| B & B Healthcare Services Ltd | Stevenage | 2019 |
| B & B Medical Ltd | Coventry | 2019 |
| B & B Services (Grimsby) Limited | Grimsby | 2019 |
| B & B Sluicing Solutions Ltd | Lewes | 2011 |
| B & C Care Homes Ltd | Solihull | 2025 |
| B & C Holt Ltd. | Greater Manchester | 1999 |
| B & C Maenz Services Limited | Bristol | 2014 |
| B & C Significant Ltd | Dagenham | 2019 |
| B & E Hastings Ltd | Bath | 2023 |
| B & F C Services Ltd | Sheffield | 2006 |
| B & G Care Agency Limited | Luton | 2019 |
| B & G Personnel Limited | Rugby | 2017 |
| B & H Care Ltd | Ipswich | 2020 |
| B & H Care Solutions Ltd | Ipswich | 2024 |
| B & J Jackson | Cockermouth | 2006 |
| B & K Co-Ordinator and Retail Sales Limited | Leicester | 2026 |
| B & K Optical Limited | Wakefield | 2014 |
| B & K Practice Limited | London | 2012 |
| B & K Rosette Limited | Oxford | 2014 |
| B & L (Sussex) Limited | Brighton | 2014 |
| B & L Premier Care Limited | Burton-On-Trent | 2008 |
| B & L Property Investments Limited | Birmingham | 2002 |
| B & M Capital Limited | Coventry | 2013 |
| B & M Dental Care Limited | Fareham | 2011 |
| B & M Medicals Limited | Surrey | 2007 |
| B & M Techniques Limited | Tiverton | 2003 |
| B & P Care Services Ltd | Sheffield | 2017 |
| B & S Childcare Services Limited | Preston | 2015 |
| B & S Healthcare Limited | Radstock | 2004 |
| B & T Parsons Limited | Derby | 2016 |
| B & T Prescriptions Limited | London | 2020 |
| B & W Dental Laboratories Limited | | 1998 |
| B a Locum Services Limited | Birmingham | 2002 |
| B a Pharmaceutical Ltd | London | 2007 |
| B a Pharmassist Ltd | Leicester | 2015 |
| B a Wellbeing Ltd | Caterham | 2019 |
| B Afriyie Limited | Dagenham | 2022 |
| B Aimson Ltd | Romsey | 2023 |
| B Alrawi Ltd | Manchester | 2019 |
| B and B Care Services Ltd | Canvey Island | 2024 |
| B and C Teamwork Limited | Leicester | 2018 |
| B and G Healthcare Professionals Ltd | Leeds | 2024 |
| B and J Health Solutions Ltd | Ilford | 2018 |
| B and K Healthcare Services Limited | Doncaster | 2018 |
| B and L Audiology (MLR) Medicolegal Reporting Ltd. | Northallerton | 2016 |
| B and M Healthcare Ltd | Luton | 2019 |
| B and R Services Limited | Salisbury | 2016 |
| B and S Traill Medical Ltd | Lancaster | 2018 |
| B and T Specialist Care Limited | Sheffield | 2023 |
| B B Counselling Services Limited | Borehamwood | 2022 |
| B Balan Limited | London | 2024 |
| B Barbers Ltd | Enfield | 2012 |
| B Beautiful by Binita Ltd | Crawley | 2024 |
| B Berg Consultants Limited | Hounslow | 2015 |
| B Blignaut Services Limited | Stanmore | 2022 |
| B Braun Sterilog (Birmingham) Limited | Sheffield | 2000 |
| B Braun Sterilog (Yorkshire) Limited | Sheffield | 1892 |
| B Braun Sterilog Limited | Sheffield | 1980 |