| Bigz Caring Ltd | Liverpool | 2019 |
| BIH Health Ltd | London | 2025 |
| Bihan Solutions Ltd | Barking | 2021 |
| BII Medical Limited | Rochester | 2011 |
| Biib Consult Ltd | Wolverhampton | 2025 |
| Biid Foundation (UK) Ltd | London | 2025 |
| Biigtown Limited | Nottingham | 2019 |
| Bijal Limited | Leicester | 2022 |
| Bijan Beigi Limited | King'S Lynn | 2018 |
| Bijaya Anaesthetic Services Ltd | Birmingham | 2004 |
| Bijear Trade Limited | Croydon | 2018 |
| Biji Titus Limited | Basingstoke, Hampshire | 2022 |
| Bijlani Consulting Limited | Edgware | 2006 |
| Bijou Day Nursery & Creche (Baglan) Limited | Bristol | 2023 |
| Bijou Holistic Ltd | Derby | 2025 |
| Bijral & Co Limited | Ashford | 2021 |
| Biju & Co. Limited | Ilford | 2011 |
| Biju Krishnan Consulting Ltd | York | 2020 |
| Bikass Care Milton Keynes Limited | Milton Keynes | 2025 |
| Bikay Limited | Oldbury | 2014 |
| Bike Safe, West Oxfordshire Limited | Oxford | 2011 |
| Bike Torque Motorcycles Ltd. | Bathgate | 2024 |
| Bikesh Health Ltd | Manchester | 2021 |
| Bikira Solutions Ltd | Aylesbury | 2013 |
| Bikkina Ltd | Shrewsbury | 2021 |
| Biko Medics Ltd | Wembley | 2024 |
| Bikram Yoga Bournemouth Limited | Bournemouth | 2011 |
| Biku Ltd | Pudsey | 2011 |
| Bikun Services Ltd | Rowley Regis | 2024 |
| Bikur Cholim Ltd | London | 2000 |
| Bila Care Services Ltd | Portsmouth | 2024 |
| Bilad AL Shaam | Cardiff | 2013 |
| Biladi Ltd | Coventry | 2023 |
| Bilal Abbas Ltd | London | 2022 |
| Bilal Ahmad Limited | Pevensey | 2014 |
| Bilal Anwar Limited | Huddersfield | 2006 |
| Bilal Fazal Shaikh Ltd | Altrincham | 2025 |
| Bilal Healthcare Ltd | Peterborough | 2013 |
| Bilal Hussain Limited | Blackburn | 2017 |
| Bilal Medicos Ltd | Nottingham | 2022 |
| Bilal Optics Ltd | Bradford | 2022 |
| Bilal Pharm Healthcare Ltd Limited | Wembley | 2026 |
| Bilal Yakub Locums Ltd | Dewsbury | 2009 |
| Bilal.M Ltd | Manchester | 2024 |
| Bilan Ltd | Birmingham | 2022 |
| Bilan Medic Centre Limited | London | 2011 |
| Bilanz 247 Limited | Wigan | 2026 |
| Bilard Ltd | Spalding | 2014 |
| Bilauda Limited | Leeds | 2022 |
| Bilax Ltd | London | 2013 |
| Bilbil Management Ltd | Southall | 2022 |
| Bilbrook Properties Limited | Codsall | 2012 |
| Bilikisuadeola Limited | London | 2020 |
| Bilimoria Echo Service Limited | Stockport | 2024 |
| Bilitik Ltd | Blackburn | 2014 |
| Bilkheyr Limited | London | 2022 |
| Bilkhu Projects Limited | Fareham | 2018 |
| Bill HAY Limited | Aberdeen | 1990 |
| Bill Jago Dental Laboratory Ltd | Devon | 2007 |
| Bill Powell Ceramics Limited | | 2005 |
| Bill Social Care Ltd | Bradford | 2015 |
| Billboard Ministry Limited | Kington | 2021 |
| Biller Holdings Limited | Ipswich | 2024 |
| Billericay Dental Studio Limited | Worthing | 2014 |
| Billericay Healthcare Ltd | Bloxworth | 2016 |
| Billericay Orthodontics Limited | 73 King Street | 2010 |
| Billericay Osteopathic Practice Limited | Billericay | 2002 |
| Billesley ARK Volunteers CIC | Birmingham | 2018 |
| Billgto Care Ltd | London | 2022 |
| Billie Care Limited | Leicester | 2014 |
| Billinge Day Nursery Ltd | Wigan | 2025 |
| Billinge Physiotherapy Limited | Wigan | 2018 |
| Billingham Anaesthetic Services Ltd | Salisbury | 2025 |
| Billingham and Norton PCN Ltd | Billingham | 2026 |
| Billingham Environmental Link Programme Limited | Billingham | 2010 |
| Billingshurst Osteopaths Limited | Horsham | 2010 |
| Billington Carers Ltd | Southampton | 2019 |
| Billioncare Ltd | Bromley | 2022 |
| Billions Resources Ltd | Belfast | 2022 |
| Billmartins Care Ltd | Keston | 2024 |
| Billy Aesthetic Ltd | London | 2025 |
| Billy Akrigg Fitness Limited | Morecambe | 2020 |
| Billy-Sarks Care Ltd | Reading | 2024 |
| Billycissy Ltd | Birmingham | 2021 |
| Billys Childcare Services Ltd | Waltham Cross | 2022 |
| Bilnaz Ltd | Birmingham | 2024 |
| Bilobos & Co Ltd | Bristol | 2024 |
| Bilolah Limited | Liverpool | 2022 |
| Bilorz Consulting Limited | London | 2013 |
| Bilquies Welfare Ltd | Barking | 2023 |
| Bilsby Chiropractic Limited | Tunbridge Wells | 2014 |
| Bilsington Therapeutic Stables CIC | Ashford | 2015 |
| Bilu Ltd | London | 2024 |
| BIM Care Services Limited | London | 2019 |
| Bima Care Ltd | Cardiff | 2024 |
| Bimal Limited | Derby | 2002 |
| Bimayo Health Care Services Limited | Erith | 2013 |
| Bimb Services Ltd | London | 2013 |
| Bimble Bees Ltd | Whitby | 2018 |
| Bimblings & Trinity Healthcare Ltd | London | 2016 |