| Blue River Home Care Ltd | Waltham Cross | 2017 |
| Blue Rock Care Ltd | Ilford | 2023 |
| Blue Roof Bungalow Limited | Southampton | 2016 |
| Blue Room Psychology and Trauma Services Limited | London | 2018 |
| Blue Rose Care Limited | Egham | 2013 |
| Blue Rose Therapy Ltd | London | 2025 |
| Blue Sails Psychology Limited | Exmouth | 2020 |
| Blue Sand Medical Ltd | Norwich | 2020 |
| Blue Sapphire Care Limited | Leighton Buzzard | 2010 |
| Blue Sapphire Medical Limited | North Finchley | 2021 |
| Blue Sheet Limited | Manchester | 2007 |
| Blue Skies Addiction Centre Ltd | Borehamwood | 2013 |
| Blue Skies Care Group Ltd | Swadlincote | 2023 |
| Blue Skies Care Limited | Preston | 2025 |
| Blue Skies Case Management & Care Ltd | Woolacombe | 2023 |
| Blue Skies Occupational Health Ltd | Whitchurch | 2020 |
| Blue Skies Outreach Ltd | Burnley | 2023 |
| Blue Skies Psychology Ltd | Glasgow | 2024 |
| Blue Sky & Clouds Limited | Orpington | 2005 |
| Blue Sky 20 20 Ltd | Paignton | 2017 |
| Blue Sky Anaesthetics Limited | Poole | 2017 |
| Blue Sky Care Limited | Derby | 2006 |
| Blue Sky Care Operators Limited | London | 2021 |
| Blue Sky Care Services Ltd | Musselburgh | 2023 |
| Blue Sky Counselling Limited | West Malling | 2023 |
| Blue Sky Day Nursery Limited | York | 2004 |
| Blue Sky Dental Limited | Brighton | 2016 |
| Blue Sky Enabling Limited | Trowbridge | 2013 |
| Blue Sky Fostering Limited | Harrow | 2005 |
| Blue Sky Healthcare Limited | Liverpool | 2022 |
| Blue Sky Medical Limited | Dagenham | 2019 |
| Blue Sky Service 21 Limited | Colchester | 2021 |
| Blue Sky Sports Foundation Ltd | Leeds | 2022 |
| Blue Sky Thai Massage Ltd | Belfast | 2024 |
| Blue Sky Whitefield Ltd | Prestwich | 2023 |
| Blue Smile Project | Cambridge | 2010 |
| Blue Smiles Limited | Manchester | 2024 |
| Blue Solution Care Agency Ltd | London | 2026 |
| Blue Songbird Ltd | London | 2022 |
| Blue Soul Holistics Ltd | Wylam | 2005 |
| Blue Spot Care Services Ltd | Weston-Super-Mare | 2018 |
| Blue Spot Health Limited | London | 2023 |
| Blue Springs Care Limited | Colchester | 2025 |
| Blue Square Performance Ltd | Hythe | 2023 |
| Blue Star Care Ltd | Leicester | 2021 |
| Blue Star Dent Limited | Harrow | 2022 |
| Blue Star Medical Consulting Limited | Woking | 2017 |
| Blue Star Medical Group Limited | Stockport | 2026 |
| Blue Star Medical Solutions Ltd | Stockport | 2024 |
| Blue Star Oracle Ltd | Leeds | 2026 |
| Blue Star Pharma Ltd | Dewsbury | 2022 |
| Blue Stone Care Limited | Ashford | 2026 |
| Blue Streams Care Limited | Croydon | 2018 |
| Blue Sunrise Care Limited | Yeovil | 2016 |
| Blue Support Limited | Liverpool | 2025 |
| Blue Swan Health Care Limited | Gainsborough | 2021 |
| Blue Therapy Clinic Ltd | North Shields | 2015 |
| Blue Tiger Psychology Group Ltd | Brighton | 2022 |
| Blue Topaz Medicals Ltd | Middleton | 2024 |
| Blue Tree Care Limited | Oldham | 2016 |
| Blue Tree Children's Home Limited | Oldham | 2018 |
| Blue Tulip Imaging Services Ltd | London | 2023 |
| Blue Turtle Physiotherapy & Wellness Clinic Ltd | Telford | 2024 |
| Blue Valley Care Ltd | Wigston | 2023 |
| Blue Ventures Conservation | London | 2003 |
| Blue Villa Limited | Coventry | 2023 |
| Blue Water Care Group Ltd | Burton-On-Trent | 2020 |
| Blue Willow Day Nursery Holmer Green Ltd | Slough | 2022 |
| Blue Willow Day Nursery Horlicks Quarter Ltd | Slough | 2023 |
| Blue Willow Day Nursery Ltd | Slough | 2015 |
| Blue Zebra Ltd | York | 2022 |
| Blue-Stream Health Limited | Edinburgh | 2025 |
| Bluealex Ltd | Chester | 2017 |
| Blueapple Dental and Implant Team Limited | Newry | 2012 |
| Bluebell (Southern) Ltd | Wakefield | 2016 |
| Bluebell Aesthetics Clinic Ltd | Ilford | 2019 |
| Bluebell Barn Nursery Ltd | East Grinstead | 2023 |
| Bluebell Care at Home Ltd | Mold | 2014 |
| Bluebell Care Group Ltd | Liverpool | 2026 |
| Bluebell Care Services Limited | Wetherby | 2006 |
| Bluebell Childcare Ltd | Coalisland | 2020 |
| Bluebell Court Care Home Limited | Salford | 2021 |
| Bluebell Day Nursery Bebington Limited | Wirral | 2008 |
| Bluebell Dental Practice Limited | Ilford | 2010 |
| Bluebell First AID (Bristol) Ltd | Newport | 2024 |
| Bluebell Group Homes Ltd | Northampton | 2023 |
| Bluebell Health Holdings Ltd | Ilford | 2020 |
| Bluebell Healthcare Ltd | London | 2024 |
| Bluebell Healthcare Solutions Ltd | Carterton | 2024 |
| Bluebell Hill Nursery Ltd | Cannock | 2021 |
| Bluebell Homecare Limited | Chelmsford | 2018 |
| Bluebell House Care Limited | Luton | 2026 |
| Bluebell Hydro and Physio Limited | Birmingham | 2016 |
| Bluebell Lane Medical Practice (Liverpool) Limited | Liverpool | 2017 |
| Bluebell Lane Medical Practice Limited | Bootle | 2017 |
| Bluebell LEE Limited | Crowborough | 2014 |
| Bluebell Lodge Limited | Torquay | 2018 |
| Bluebell Lodge Private Day Nursery Limited | | 2008 |
| Bluebell Medical Services Ltd | Poole | 2017 |
| Bluebell Nursery Chertsey Limited | London | 2018 |