| Bott and Co EOT Limited | Wilmslow | 2025 |
| Botterill Associates Limited | Tamworth | 2005 |
| Botterill Holdings Limited | Solihull | 2023 |
| Botterill Investments Limited | Solihull | 2023 |
| Botting Farms Limited | Canterbury | 2019 |
| Bottle Field Investments Limited | Sevenoaks | 2026 |
| Bottles and Casks York Holding Limited | York | 2023 |
| Bottletop Holdings Limited | Lincoln | 2018 |
| Bottling Holdings Europe Limited | Uxbridge | 2016 |
| Bottomline Payment Services Limited | Reading | 2000 |
| Bottomline Technologies Europe Limited | Reading | 1999 |
| Botts Holdings Limited | London | 1999 |
| Boud Holdings Ltd | Spalding | 2023 |
| Boudicca Financial Solutions Ltd | Maldon | 2012 |
| Bougainvillea Partners Ltd | Clifton | 2009 |
| Bough Homes Limited | Leighton Buzzard | 2026 |
| Bought by Many Ltd | London | 2020 |
| Boughton Green Holdings Ltd | Northampton | 2024 |
| Boulbonne Ltd | Manchester | 2022 |
| Bould Holdings Ltd | Coventry | 2026 |
| Boulden Holdings Limited | Loughton | 2017 |
| Boulder Black Holdings Ltd | Stroud | 2026 |
| Boulder Managed Strategies Ltd | Macclesfield | 2026 |
| Boulder Trustee Limited | Manchester | 2018 |
| Boult Acquisitions Ltd | Newton Abbot | 2025 |
| Boultbee Developments (NO.1) Limited | Hereford | 2011 |
| Boultbee Developments Group Services Ltd | Hereford | 2021 |
| Boultbee Developments Holdings Limited | Hereford | 2020 |
| Boultbee Developments Ltd | Hereford | 2012 |
| Boultbee Estates (NO. 1) Limited | Hereford | 2017 |
| Boultbee Estates Limited | Hereford | 2012 |
| Boultbee Finance Holdings Ltd | Hereford | 2020 |
| Boultbee Finance Ltd | Hereford | 2020 |
| Boultbee LDN Investment Ltd | London | 2015 |
| Boultbee Lending 1 Limited | Hereford | 2013 |
| Boultbee Lending 2 Limited | Hereford | 2013 |
| Boulter Mortgages Limited | Horsham | 2024 |
| Boultons Financial Services Ltd | Leigh | 2008 |
| Bounce EV Limited | Glasgow | 2021 |
| Bounce Home Limited | Witham | 2018 |
| Bounce Network Limited | Witham | 2017 |
| Bouncelife Limited | Witham | 2015 |
| Bouncing Back Limited | London | 2024 |
| Bouncing Brilliant Limited | Bishop'S Stortford | 2006 |
| Bound (Gloucester) Limited | Gloucester | 2014 |
| Boundary Creek UK Holdings Ltd | London | 2019 |
| Boundary Group (Holdings) Limited | Liverpool | 2017 |
| Boundary Group Investments Ltd | Liverpool | 2021 |
| Boundary Security Limited | New Malden | 2021 |
| Boundary Ventures Ltd | Leeds | 2024 |
| Boundary Visualisation Holdings Limited | London | 2019 |
| Boundingfields Ltd | Stockport | 2024 |
| BOUNDL3SS Limited | London | 2024 |
| Boundless Global Investments Ltd | London | 2025 |
| Bounty Financial Planning Limited | Beverley | 2022 |
| Bounty Properties Services Ltd | Carlisle | 2024 |
| Bounty Solutions Limited | Romford | 2025 |
| Bourdais Limited | Bishop Auckland | 2022 |
| Bourgeon Holdings Limited | Edinburgh | 2018 |
| Bourgognes Unlimited | York | 2024 |
| Bourke & Apple Holdings Ltd | Baildon | 2023 |
| Bourlet Financial Planning Limited | Wiltshire | 2003 |
| Bourlet Holdings Limited | Corsham | 2024 |
| Bourn Capital Group Ltd | Bournemouth | 2023 |
| Bourne & Bricks Ltd | London | 2022 |
| Bourne END Manufacturing Limited | London | 2011 |
| Bourne END Property (Industrial) Limited | Leamington Spa | 2002 |
| Bourne Financial Options Ltd | Uxbridge | 2022 |
| Bourne Friars Holding Ltd | Bury St. Edmunds | 2026 |
| Bourne Group Holdings Ltd | Parkstone | 1992 |
| Bourne Health Limited | Purley | 2023 |
| Bourne Holdings Group Ltd | Polegate | 2025 |
| Bourne HPP Holdings Ltd | Chelmsford | 2024 |
| Bourne Independent Financial Advisers Limited | Alton | 2002 |
| Bourne Office Space Group Limited | London | 2018 |
| Bourne Protection Advice Ltd | Barry | 2026 |
| Bourne River Ltd | Cheltenham | 2025 |
| Bourne Topco Limited | London | 2017 |
| Bourne Valley Holdings Limited | Andover | 2014 |
| Bourne Valley Investments Ltd | Andover | 2026 |
| Bournebridge Financial Services Limited | London | 2016 |
| Bournebrook Estates Ltd | London | 2024 |
| Bournegrove Financial Planning Limited | Cardiff | 2017 |
| Bournelands Ltd | Farnham | 2021 |
| Bournelea Ltd | Tunbridge Wells | 2022 |
| Bournemouth Property Group Limited | Bournemouth | 2022 |
| Bournemouth Rugby Football Club Holdings Ltd | Ringwood | 2025 |
| Bournemouth Twist Limited | London | 2022 |
| Bournville Catering Holdings Limited | Birmingham | 2026 |
| Bourton Ventures Ltd | Bury St. Edmunds | 2023 |
| Boustan Holdings Limited | London | 2022 |
| Boustead & Co. Limited | London | 2013 |
| Boutelje Trading Limited | East Grinstead | 2016 |
| Boutique Commodities Limited | Leigh On Sea | 2012 |
| Boutique Financial Limited | Wilmslow | 2017 |
| Boutique Holdco 1 Ltd | Romford | 2022 |
| Boutique Holdco 2 Ltd | Romford | 2022 |
| Boutique Holdco 3 Ltd | Romford | 2023 |
| Boutique Investment Holdings Limited | London | 2017 |
| Boutique Modern Holdings Limited | London | 2023 |