| Blossoming Futures Limited | Manchester | 2025 |
| Blossoming Hearts Care Agency Ltd | Grantham | 2015 |
| Blossoming Homes Ltd | Bristol | 2009 |
| Blossoming Minds Counselling Ltd | Bathgate | 2024 |
| Blossoming Psychology Ltd | Hereford | 2025 |
| Blossompharm Ltd | Birmingham | 2015 |
| Blossoms Baby Limited | Ashford | 2019 |
| Blossoms Care Group Ltd | Harrow | 2024 |
| Blossoms Care Ltd | Barking | 2019 |
| Blossoms Care NW Ltd | Poulton-Le-Fylde | 2015 |
| Blossoms Care Services Limited | Sittingbourne | 2008 |
| Blossoms Childminding Ltd | London | 2025 |
| Blossoms Children's Care Ltd | London | 2018 |
| Blossoms Complex Care Ltd | Poulton Le Fylde | 2024 |
| Blossoms Day Care Ltd | London | 2025 |
| Blossoms Day Nurseries (Great Barr) Ltd | Walsall | 2015 |
| Blossoms Day Nursery Cannock Ltd | Walsall | 2019 |
| Blossoms Day Nursery Corfe Mullen Ltd | Wimborne | 2018 |
| Blossoms Enterprises Ltd | New Romney | 2013 |
| Blossoms Healthcare Group Ltd | London | 2024 |
| Blossoms Healthcare West Midlands Limited | Birmingham | 2023 |
| Blossoms Homes Ltd | Tipton | 2025 |
| Blossoms in the Wood Limited | Birmingham | 2025 |
| Blossoms Montessori Children's House Limited | Romford | 2023 |
| Blossoms Private Care Ltd | Bridlington | 2025 |
| Blossoms Solutions Ltd | Milton Keynes | 2026 |
| Blossoms Trading Limited | Ipswich | 2017 |
| Blossoms UK Trading Ltd | Ashford | 2025 |
| Blossomtree Care Ltd | Glasgow | 2025 |
| Blossomy Care Ltd | London | 2025 |
| Blowing Bubbles Ltd | London | 2025 |
| Blowingpoint Enterprises Limited | Waltham Abbey | 2013 |
| Bloxdent Limited | Northampton | 2009 |
| Bloxdent OS Ltd | Northampton | 2025 |
| Bloxwich Healthcare Limited | Cannock | 2014 |
| Blrd Limited | London | 2023 |
| Blrr Limited | Swindon | 2023 |
| BLS Medical Limited | Magherafelt | 2016 |
| BLS Services Ltd | London | 2019 |
| BLS- Brighter Light Support Ltd | London | 2020 |
| Blsd Solutions Limited | Sheffield | 2015 |
| Bltft Care Partners Limited | Yeovil | 2026 |
| Bltm Limited | Hitchin | 2021 |
| Bltw Care Ltd | Poole | 2021 |
| BLU Oceans Limited | London | 2025 |
| BLU2 Tooth Fairy Limited | Cardiff | 2020 |
| Blubridge Holdings Ltd | Stoke-On-Trent | 2024 |
| Blucare Limited | Edinburgh | 2023 |
| Blucharis Consulting Limited | Manchester | 2020 |
| Blucher Orthopaedics Ltd | Bristol | 2026 |
| Blue & Snow Limited | Portsmouth | 2013 |
| Blue Agent Ltd | Portsmouth | 2018 |
| Blue Angel Care Limited | Reading | 2015 |
| Blue Apple Healthcare Ltd | Slough | 2012 |
| Blue Apple Medical Services Limited | Gillingham | 2014 |
| Blue Arch Homecare Group Limited | Leicester | 2024 |
| Blue Arch Homecare Limited | Leicester | 2018 |
| Blue Arrow Care Limited | Surbiton | 2016 |
| Blue Arrow Healthcare Ltd | Leeds | 2020 |
| Blue Arrow Homecare Limited | Uxbridge | 2022 |
| Blue ASA Services Ltd | Nottingham | 2022 |
| Blue Badge Alliance Ltd | Harrow | 2025 |
| Blue Barchetta Ltd | Glasgow | 2023 |
| Blue Base Support UK Limited | London | 2018 |
| Blue Bay 21 Ltd | Harrow | 2022 |
| Blue Bay Home Care Ealing Limited | Edgware | 2024 |
| Blue Bay Home Care Limited | Edgware | 2015 |
| Blue Bear Day Care Ltd | Ilkeston | 2025 |
| Blue Bear Group Limited | Stockport | 2015 |
| Blue Bell Rural Activities Ltd | Colne | 2011 |
| Blue Bird Aesthetics Ltd | Worthing | 2023 |
| Blue Bird Healthcare Ltd | Harrow | 2018 |
| Blue Bricks 108 Ltd | London | 2024 |
| Blue Bridge Care Limited | Romford | 2025 |
| Blue Bubble Immersive CIC | Plymouth | 2024 |
| Blue CAP Care Ltd | Coventry | 2024 |
| Blue Care Ltd | London | 2012 |
| Blue Care Support Limited | Cardiff | 2025 |
| Blue Care UK Services Ltd | London | 2023 |
| Blue Cherry Care Services Ltd | St. Asaph | 2026 |
| Blue Chess Recruitment Ltd | Newport Pagnell | 2019 |
| Blue Community Support Ltd | Haverfordwest | 2026 |
| Blue Connecting Ltd | Witney | 2023 |
| Blue Coral Healthcare Ltd | Sheffield | 2022 |
| Blue Corpuscle Limited | Bolton | 2019 |
| Blue Daisy Care Limited | London | 2021 |
| Blue Dental Laboratory Limited | Tunbridge Wells | 2015 |
| Blue Derm Limited | Harrow | 2023 |
| Blue DEW Ltd | Hyde | 2026 |
| Blue Diamond Care Ltd | Harrogate | 2022 |
| Blue Diamond Care Services Ltd | Folkestone | 2024 |
| Blue Diamond Global Health Limited | Belfast | 2024 |
| Blue Diamond Health Ltd | Preston | 2021 |
| Blue Diamond Properties Ltd | Folkestone | 2000 |
| Blue Diamond Wellbeing Limited | Loughborough | 2018 |
| Blue DOC Limited | Milton Keynes | 2016 |
| Blue Dolphin Management Ltd | Southall | 2023 |
| Blue Dolphin Medical Ltd | Dorchester | 2025 |
| Blue Dolphin Welfare Ltd | Dorchester | 2025 |
| Blue Door Dental Limited | Edinburgh | 2013 |