| Blueprint Medical Limited | Manchester | 2022 |
| Blueprint Performance Personal Training Ltd | Glasgow | 2016 |
| Blueprint Property Care Ltd | Castleford | 2024 |
| Blueprints Care Ltd | Heanor | 2018 |
| Blueribbon Care Limited | London | 2021 |
| Bluerock Dent Limited | St. Austell | 2021 |
| Bluerock Employment Group Ltd | Leeds | 2015 |
| Bluerock Healthcare Limited | Leeds | 2013 |
| Bluerose Healthcare Ltd | Nottingham | 2024 |
| Blueroze Limited | Liversedge | 2021 |
| Blues Berries Limited | Lichfield | 2017 |
| Blues Healthcare Ltd | Milton Keynes | 2024 |
| Blues Medical Limited | Bradford | 2024 |
| Bluesci Consultancy Community Interest Company | Old Trafford | 2013 |
| Bluesci Support Community Interest Company | Timperley | 2015 |
| Blueseal Healthcare Limited | Norwich | 2021 |
| Blueshield Limited | Chesterfield | 2023 |
| Bluesil Limited | London | 2014 |
| Blueskay Residential Homes Limited | Erith | 2025 |
| Bluesky Asbestos Control Limited | Kettering | 2017 |
| Bluesky Cambridge Limited | Cambridge | 2021 |
| BLUESKY26 Limited | Glasgow | 2021 |
| Bluesky’S Healthcare Ltd | London | 2019 |
| Bluespot Ltd | Lytham St. Annes | 2004 |
| Bluestar Care & Support Ltd | Crawley | 2022 |
| Bluestar Care Services Limited | Epsom | 2024 |
| Bluestar Pre-Trial Support C.I.C. | Cranleigh | 2024 |
| Bluestar PVT Ltd | London | 2026 |
| Bluestar Services Limited | Manchester | 2025 |
| Bluesteth Solutions Ltd | Harlow, | 2026 |
| Bluestocking Haven Limited | London | 2025 |
| Bluestone Care Services Limited | Melton Mowbray | 2025 |
| Bluestone Childcare Limited | London | 2015 |
| Bluestone Medical Ltd | Shaftesbury | 2024 |
| Bluestone Services (South West) Ltd | Shaftesbury | 2018 |
| Bluetec DS Limited | Hove | 2019 |
| Bluetooth Limited | London | 2014 |
| Bluetop Care Ltd. | Rochester | 2022 |
| Bluetulip Associates Ltd | Luton | 2008 |
| Bluevalues Ltd | London | 2024 |
| Bluevelvety Tiny Tots Limited | Chatham | 2018 |
| Blueviewcare Ltd | Oxford | 2025 |
| Bluewater Care Homes Limited | Romsey | 2010 |
| Bluewater Care Limited | Huddersfield | 2017 |
| Bluewaters Healthcare Limited | Brough | 2020 |
| Bluewave Care Ltd | Taunton | 2024 |
| Blueway Healthcare Limited | Birmingham | 2023 |
| Bluey Holdings Limited | Harrow | 2025 |
| Bluezone Care Ltd | Basingstoke | 2020 |
| Bluezone Healthcare Limited | Barnsley | 2023 |
| Bluffhill Temby Healthcare Ltd | Leicester | 2019 |
| Blugibbon Ltd | Keighley | 2016 |
| Bluhen Limited | Fareham | 2011 |
| Blujo Ltd | Carshalton | 2025 |
| Blukat Ltd | Bushey | 2026 |
| Bluline West Yorkshire Limited | Worcester | 2014 |
| Blume Holdings Limited | Basildon | 2019 |
| Blume Psychology Ltd | Reading | 2020 |
| Blundell Care Service Ltd | Liverpool | 2025 |
| Blundell Consultancy Limited | London | 2024 |
| Blundell Milne Dentistry Ltd | Dundee | 2023 |
| Blundellsands Kindergarten Ltd | Southport | 2013 |
| Blundellsands Optical Ltd | Liverpool | 2012 |
| Blupanda Health Ltd | Harlow | 2024 |
| Blush & Bows Ltd | Clydebank | 2026 |
| Blush Aerial Fitness Limited | Wilmslow | 2019 |
| Blush Aesthetics Limited | Ellesmere | 2018 |
| Blush Medical Aesthetics Ltd | Harrogate | 2022 |
| Blush Smiles Ltd | Southam | 2025 |
| BLV Group Ltd | Bothwell | 2020 |
| BLW UK Zone 1 Limited | Belvedere | 2015 |
| BLY Bond Limited | Rotherham | 2014 |
| Blyss Healthcare Limited | Coventry | 2021 |
| Blyss UK Limited | Belvedere | 2021 |
| Blyth Associates Limited | Birmingham | 2010 |
| Blyth Medico-Legal Limited | Glasgow | 2023 |
| Blyth Thai Massage Ltd | North Shields | 2024 |
| Blyth Valley Disabled Forum Ltd | Blyth | 1997 |
| Blythe Neighbourhood Council | London | 1990 |
| Blythe Valley Dental Ltd | Oldham | 2023 |
| Blythson Limited | London | 1994 |
| Blythstone Ltd | Scunthorpe | 2025 |
| Blythswood Health and Wellbeing Ltd | Glasgow | 2015 |
| Blythswood Investments Ltd | Glasgow | 2020 |
| Blyton Dental Surgery Limited | Scunthorpe | 2015 |
| BM Advanced Aesthetics & Skin Ltd | Edinburgh | 2026 |
| BM Care Management Solutions Ltd | Leicester | 2012 |
| BM Consultancy Limited | Hayes | 2008 |
| BM Cozma Ltd | Bournemouth | 2022 |
| BM Dental Laboratory Ltd | Glasgow | 2016 |
| BM Dental Limited | Hove | 2023 |
| BM Dyslexia Consultancy Ltd | Birmingham | 2016 |
| BM Healthcare Limited | Ipswich | 2021 |
| BM Healthcare Services Ltd | Milton Keynes | 2019 |
| BM Holdings International Ltd | London | 2023 |
| BM Homecare Ltd | London | 2015 |
| BM Just Camps Ltd | Warwick | 2025 |
| BM Konzo Ltd | Cardiff | 2024 |
| BM Medical Ltd | Smethwick | 2015 |
| BM Medicare Limited | London | 2014 |