| Bhullar Consultancy Ltd | Huddersfield | 2021 |
| Bhullar Medical Ltd | Huddersfield | 2021 |
| Bhullar Smart Investments Ltd | Huddersfield | 2021 |
| Bhurakhali Welfare Association Ltd | Romford | 2022 |
| Bhurji Limited | Gravesend | 2012 |
| BHW Limited | Greenford | 2009 |
| BHX Aesthetics Lounge Ltd | Birmingham | 2015 |
| Bhza Limited | London | 2024 |
| BI Reporting Limited | Windsor | 2007 |
| BI & JA Dennis Limited | Weymouth | 2010 |
| BI Matters Ltd | Bristol | 2022 |
| BI Transgroup UK Ltd | London | 2016 |
| Bi-Bip Ltd | London | 2023 |
| BIA Beauty Ltd | Thornton Heath | 2017 |
| Biab by ABS Ltd | Brentwood | 2025 |
| Biab Nails 1 Ltd | London | 2025 |
| Biab Nails Wandsworth Ltd | London | 2026 |
| Biageo Ltd | Edgware | 2008 |
| Biagi Rhodes Ltd | Poulton Le Fylde | 2026 |
| Biakath Healthcare Ltd | Bradford | 2021 |
| Biala Services Limited | Slough | 2021 |
| Bian Support and Enrichment CIC | London | 2024 |
| Bianca Beauty Salon Ltd | London | 2019 |
| Bianca Best Ltd | London | 2019 |
| Bianca Blue Salon Limited | Bristol | 2013 |
| Bianca Coll Hairdressing Ltd | Glasgow | 2015 |
| Bianca Glamour Beauty Training Academy Ltd | Walsall | 2025 |
| Bianca Jade Hair Academy Limited | Merthyr Tydfil | 2026 |
| Bianca Maria Aesthetics Limited | Poole | 2022 |
| Bianca Simone Hair and Beauty Limited | St. Asaph | 2013 |
| Bianchi Aviation Film Services Limited | Thame | 1984 |
| Bianchi INK Limited | Derby | 2025 |
| Bianco Beauty Ltd | Bedford | 2016 |
| BIB 2024 Ltd | Reigate | 2024 |
| BIB Aesthetics Limited | Bolton | 2016 |
| BIB Network CIC | Kington | 2020 |
| BIB Smart Solutions Ltd | London | 2025 |
| Biba Aesthetics Ltd | Chelmsford, Essex | 2023 |
| Bibaah Events Limited | Farnborough | 2019 |
| Bibaj Ltd | London | 2020 |
| Bibas Hair (Romsey) Ltd | Romsey | 2018 |
| Bibby Publishing Limited | Maidstone | 2007 |
| Bibby Trading Limited | Chelmsford | 2021 |
| Biberian Barbers Ltd | Cheltenham | 2022 |
| Bibi Aesthetics Ltd | Ashton-Under-Lyne | 2025 |
| Bibi Art of Repair Limited | Nottingham | 2024 |
| Bibi Beauty Zone Ltd | Salford | 2026 |
| Bibi Contracts Trade Ltd | Luton | 2020 |
| Bibi Enterprises Limited | London | 2019 |
| Bibi Glamz Ltd | Manchester | 2025 |
| Bibi Interiors Ltd | Blackburn | 2008 |
| Bibi Management Ltd | London | 2014 |
| Bibi Nailbar Ltd | Harrow | 2025 |
| Bibi Services Ltd | Luton | 2024 |
| Bibi's Beauty & Aesthetics Ltd | Chesham | 2017 |
| Bibiana Confererence Hall Ltd | West Bromwich | 2024 |
| Bibihairlineuk Limited | Manchester | 2026 |
| Bibire Events, Catering and Hospitality Management Services Limited | London | 2015 |
| Bible by the Beach | Eastbourne | 2008 |
| Bible Church of God's Praise (Well of Praise) | London | 2011 |
| Bible Faith Holiness Church Limited | | 1991 |
| Bible Society Northern Ireland | Belfast | 2025 |
| Bible Streams CIC | Mitcham | 2024 |
| Bibles for Europe | Romford | 2011 |
| Bibleway Churches UK (Worldwide) | Hemel Hempstead | 2009 |
| Biblica Europe Ministries Trust | London | 1963 |
| Biboca Digital Ventures UK Limited | London | 2025 |
| Bibotan Ltd | Brighton | 2012 |
| Biboukar Ltd | London | 2023 |
| Biboz Hair Ltd | London | 2026 |
| Bibs Investments Ltd | London | 2020 |
| BIC Group Limited | London | 2009 |
| Bicester Glow Clinic Ltd | Bicester | 2020 |
| Bicester Hand Car Wash Ltd | Northampton | 2013 |
| Bicester Pride Community Interest Company | Bicester | 2021 |
| Bicester Self Storage Limited | Bicester | 2013 |
| Bicester Tailor Limited | Bicester | 2025 |
| Bicester V.E. Limited | Nottingham | 1999 |
| Bicester Vision C.I.C. | Bicester | 2020 |
| Bicester Wills Ltd | Bicester | 2015 |
| Bich Hoang Limited | Enfield | 2025 |
| Bichthophi Limited | London | 2025 |
| Bici Construction Group Ltd | Kingston Upon Thames | 2022 |
| Bici Construction Ltd | Woodford Green | 2015 |
| Bicity Limited | London | 2019 |
| Bickerstaffe Aviation Limited | Preston | 2008 |
| Bickerton Building Ltd | Nantwich | 2025 |
| Bickiepegs Limited | London | 1996 |
| Bickleys Finest Limited | Croydon | 2020 |
| Bico Beauty Limited | Doncaster | 2024 |
| Bicol United UK Community Interest Company | London | 2021 |
| Bicycle Association of Great Britain Limited(The) | Haverhill | 1973 |
| Bicycle Buddy Limited | Doncaster | 2022 |
| Bicycle Repair Tavistock Ltd | Tavistock | 2025 |
| BID by Design Ltd | Chester | 2018 |
| BID Clifton Village Limited | Bristol | 2012 |
| BID Consultancy Ltd | Nottingham | 2025 |
| BID for Galashiels Limited | Galashiels | 2025 |
| BID Fort William Limited | Fort William | 2025 |
| BID Leamington Limited | Royal Leamington Spa | 2008 |