| Bosque International Ltd | Reading | 2015 |
| Boss & Co Homes Ltd | Birmingham | 2010 |
| Boss Commercials Limited | Redditch | 2020 |
| Boss Controls (North West) Ltd | Horsham | 2020 |
| Boss Corp Ltd | Hereford | 2018 |
| Boss Edition Ltd | Bolton | 2023 |
| Boss Electric Vehicle Chargers Ltd | Chelmsford | 2020 |
| Boss Electric Vehicle Charging Ltd | Chelmsford | 2020 |
| Boss Electric Vehicle Company Ltd | Chelmsford | 2020 |
| Boss Enclosures Limited | Ipswich | 2011 |
| Boss Enterprises Ltd | London | 2021 |
| Boss FIX Bergen Limited | London | 2023 |
| Boss GAS UK Ltd | Warrington | 2014 |
| Boss Glass Co., Limited | Gillingham | 2015 |
| Boss Plant Sales (Essex) Ltd | Cheddington Ln | 2026 |
| Boss Properties (Leicester) Limited | Leicester | 2021 |
| Boss Security Solutions Ltd | Walsall | 2021 |
| Boss Software Solutions Limited | London | 2014 |
| Boss Tuneage Music Limited | Wilden | 2012 |
| Bossington Estates Management Ltd | Stockbridge | 2011 |
| Bosskhan Entertainments Ltd | London | 2019 |
| Bosstown Limited | London | 2021 |
| Bostar Industries Co., Ltd | London | 2017 |
| Bostech Innovations Ltd | Hitchin | 2024 |
| Bostin Bargains Limited | Kingswinford | 2021 |
| Boston Bulbs Wholesale Limited | Spalding | 2014 |
| Boston Flower Bulbs Limited | Spalding | 2019 |
| Boston Mangal Ltd | Scunthorpe | 2019 |
| Boston Power Ltd | Tadcaster | 2016 |
| Boston Quay Management Limited | Exeter | 2022 |
| Boston Road 1977 Limited | Sleaford | 2014 |
| Boston Seeds (NO.2) Limited | Downham Market | 2016 |
| Boston Topco Limited | Lamport, Northampton, West Northampton | 2021 |
| Boston Trading Limited | Cardiff | 2019 |
| Boston Transport Planning Limited | London | 2017 |
| Bosu Technology Co., Limited | London | 2022 |
| Botanic Life Ltd | Woking | 2025 |
| Botanical HUE Ltd | Bradford | 2021 |
| Both Feet Travel Ltd | Welshpool | 2021 |
| Botham Firs Ltd. | Wormley | 2015 |
| Bothhands Limited | Henley-On-Thames | 2015 |
| Bothwell Assets Limited | Manchester | 2020 |
| Bothwell Industry Co., Ltd | Beckenham | 2015 |
| Bothwell Sheet Material Limited | Bothwell | 2015 |
| Botinkit (UK) Limited | Beckenham | 2024 |
| Botle Ltd | Bournemouth | 2013 |
| Botley Devmanco Ltd | London | 2014 |
| Botmot Ltd | Huddersfield | 2024 |
| Botnhamn Vekst Invest Limited | London | 2025 |
| Botolph Management Limited | Angmering | 2007 |
| Boton Engineering Co., Limited | Stafford, | 2015 |
| Botox & Fillers Limited | London | 2022 |
| Botox Boffin Limited | London | 2022 |
| Botrix Ltd | Sheffield | 2020 |
| Botsjuana Ltd | Farnborough | 2019 |
| Botswana Exploration PLC | London | 2007 |
| Botswana Resources PLC | London | 2007 |
| Bottega Vita Design Limited | Beckenham | 2020 |
| Botterill & Co Ltd | Beverley | 2022 |
| Bottle Green Limited | Gloucester | 2007 |
| Bottle Holdings Ltd | Norwich | 2022 |
| Bottle Safe Limited | Manchester | 2014 |
| Bottoms UP Wines Limited | Dudley | 2012 |
| Botulinum & Fillers Limited | London | 2022 |
| Botulinum Boffin Limited | London | 2022 |
| Bought.At Limited | Worcester | 2014 |
| Boughton Enterprises Limited | Birmingham | 2004 |
| Boughton Fisheries Limited | Maidstone | 2010 |
| Boughton Holdings | Birmingham | 2000 |
| Boughton Loam & Turf Management Limited | Kettering | 1973 |
| Bougie Scents Ltd | Ipswich | 2020 |
| Bouji MF Ltd | Uckfield | 2025 |
| Bouldr Limited | Bolton | 2011 |
| Boules Trading Limited | Leominster | 1995 |
| Boulevard Park Management Company Limited | Belfast | 2005 |
| Boultbee Brooks (LBB) Limited | Hereford | 2019 |
| Boultbee Construction (Shelf 1) Limited | Hereford | 2015 |
| Boultbee Finance (Shelf 1) Limited | Hereford | 2015 |
| Boulton & Paul (Building Services) Ltd | Coventry | 1929 |
| Bounce Around Castle Hire Limited | Walsall | 2022 |
| Bounce Back Spirits Ltd | Liverpool | 2021 |
| Bounce Below Limited | Llanrwst | 2014 |
| Bounce Productions Limited | Congleton | 2010 |
| Bouncing COW Ltd | London | 2016 |
| Bouncy Castles R US Ltd | Burnley | 2024 |
| Bouncy Events Ltd | Port Glasgow | 2021 |
| Boundary Beds Ltd | Colne | 2021 |
| Boundary Business Park Limited | Brough | 1990 |
| Boundary Carpets Ltd | Colne | 2020 |
| Boundary Metal Limited | Maidenhead | 2008 |
| Boundary Mill Stores Limited | Colne | 1993 |
| Boundary Outlet Limited | Colne | 2022 |
| Boundary Road (Management) Limited | Kempston | 2001 |
| Boundgate Limited | London | 2010 |
| Boundless Intercontinental Group Co., Limited | Daventry | 2013 |
| Boundway Property Ltd | Lymington | 2021 |
| Bouquet and Play Limited | Leamington Spa | 2021 |
| Bourlet Close Management Company Limited | Angmering | 2015 |
| Bourn Meadows Freehold Limited | Billingshurst | 2008 |
| Bourne Accommodation Limited | Bourne | 2010 |