| BKS Removals Ltd | Cardiff | 2019 |
| BKS Specialist Services Limited | Bicester | 2008 |
| BKS Storage Ltd | London | 2025 |
| BKS Transport Ltd | Huddersfield | 2020 |
| BKT Transport Ltd | Ipswich | 2026 |
| Bktk Ltd | London | 2025 |
| Bktranspolink Limited | Southampton | 2025 |
| BKZ Driver Ltd | Bishop Auckland | 2022 |
| BKZ Transport Ltd | Bishop Auckland | 2022 |
| BL Bristol Services Ltd | Bristol | 2019 |
| BL Chauffeurs Limited | Ormskirk | 2025 |
| BL Chisholm Logistics Ltd | Darlington | 2025 |
| BL Delivery Services Limited | Maidstone | 2016 |
| BL Express Ltd | Colchester | 2024 |
| BL Transport and Logistics Ltd | Waterlooville | 2022 |
| BL2 Logistics Limited | Bolton, | 2021 |
| BL3 Transport Ltd | Barking | 2025 |
| BL5 Self Store Ltd | Westhoughton | 2016 |
| BLA Global Limited | Romford | 2012 |
| BLA Logistics Ltd | Manchester | 2016 |
| BLA Transport Ltd | Smethwick | 2025 |
| Blaauwberg Freight Management Limited | Southall | 2026 |
| Black & Bassu Trans Ltd | Peterborough | 2024 |
| Black & Blue Express Ltd | London | 2026 |
| Black Ace Transport Ltd | Slough | 2022 |
| Black and White Cars Limited | Bushey | 2020 |
| Black and White Discount Stationers (Midlands) Limited | West Midlands | 1992 |
| Black and White Logistic Ltd | Glasgow | 2025 |
| Black and White Motorways Limited | Ryde | 2024 |
| Black Angel Transport Ltd | Rhyl | 2026 |
| Black Angel Travel Ltd | Livingston | 2023 |
| Black Arrow Chauffeur Limited | London | 2018 |
| Black Badge Chauffeurs Ltd | Southend-On-Sea | 2023 |
| Black Belt Driver Ltd | Swansea | 2025 |
| Black Betty Logistics Ltd | Middlesbrough | 2025 |
| Black Bird Chauffeurs Ltd | Southall | 2019 |
| Black Book Executive Travel Ltd | Southampton | 2019 |
| Black Box Express Ltd | Nottingham | 2018 |
| Black Box Security UK Ltd | Watford | 2020 |
| Black Bullet Logistics Limited | Liverpool | 2026 |
| Black CAB Limited | Borehamwood | 2022 |
| Black CAB Taxi Ltd | London | 2026 |
| Black CAB Taxis Liverpool Ltd | Liverpool | 2022 |
| Black Cabs Edinburgh Limited | Edinburgh | 2002 |
| Black Car Co Ltd | Canvey Island | 2022 |
| Black Card Chauffeur Limited | London | 2022 |
| Black Cars Heathrow Ltd | Hounslow | 2022 |
| Black Cat Cabs Ltd | Lincoln | 2013 |
| Black Cat Deliveries Ltd | Edinburgh | 2019 |
| Black Cat Distribution Limited | Manchester | 2021 |
| Black Cat Haulage Ltd | Irvine | 2011 |
| Black Cat Travel Ltd | Lincoln | 2009 |
| Black Cat Vehicle Hire Limited | Colwyn Bay | 2017 |
| Black Company MD Ltd | Hatfield | 2024 |
| Black Country Cars Limited | Warley | 2016 |
| Black Country Clearances Ltd | Kingswinford | 2023 |
| Black Country Self Storage Ltd | West Midlands | 2006 |
| Black Country Storage Limited | Dudley | 2021 |
| Black Country Tours Limited | Dudley | 1983 |
| Black Country Transport & Logistics Ltd | Darlaston | 2013 |
| Black Country Travel Ltd | Dudley | 2025 |
| Black Crest Privú Limited | Coventry | 2026 |
| Black Crow Logistics Ltd | Barking | 2019 |
| Black Cube Holdings Ltd | Oakham | 2024 |
| Black Diamond Auto Logistics Ltd | Upminster | 2026 |
| Black Diamond Chauffeurs Ltd | London | 2026 |
| Black Diamond Inc Ltd | Potters Bar | 2018 |
| Black Diamond Services Ltd | Derby | 2016 |
| Black Diamond Travel Ltd | Rochester | 2025 |
| Black Dime Limited | London | 2025 |
| Black Dog Logistics Ltd | Porthleven | 2016 |
| Black Dog Protection Limited | Malton | 2021 |
| Black Dog Taxis Ltd | Calne | 2018 |
| Black Eagle Transfers Ltd | West Drayton | 2025 |
| Black Eight Aviation Limited | Lambeth | 2023 |
| Black Elderberry Ltd | Ottery St. Mary | 2014 |
| Black Fleet London Ltd | London | 2020 |
| Black Fleet Transport Ltd | London | 2024 |
| Black Horse 2020 Ltd | Felixstowe | 2020 |
| Black Horse Express Ltd | Tonbridge | 2023 |
| Black Horse Haulage Ltd | Coventry | 2025 |
| Black Horse Logistics Limited | Walsall | 2017 |
| Black Horse Transport Ltd | Slough | 2025 |
| Black Ice Group Limited | Plymouth | 2026 |
| Black Key Chauffeurs Limited | London | 2025 |
| Black Kite Transport Ltd | Sheffield | 2022 |
| Black Knight Chauffeur Limited | London | 2018 |
| Black Knight London Chauffeurs Ltd | Slough | 2019 |
| Black Label Airport Transfers Ltd | Luton | 2024 |
| Black Label Chauffeurs Ltd | London | 2025 |
| Black Label Hires Ltd | Greenford | 2025 |
| Black Lake London Ltd | Bury St. Edmunds | 2025 |
| Black Light Studio Ltd | Bournemouth | 2021 |
| Black Lion Chauffeurs Ltd | Borehamwood | 2023 |
| Black Lion Express Limited | Hampshire | 1992 |
| Black Logistics Limited | Glasgow | 2025 |
| Black MEN Ltd | Burton-On-Trent | 2017 |
| Black Mixen Ltd | Presteigne | 2025 |
| Black Money Box Limited | London | 2024 |
| Black Moor Farm Business Park Management Company Limited | Bedford | 2006 |