| Baldry Brothers Holding Ltd | Essex | 2026 |
| Baldur Mortgages Limited | London | 2017 |
| Baldwin & Robinson Holdings Ltd | Oxted | 2019 |
| Baldwin Asset Management Group Limited | Wigan | 2024 |
| Baldwin Glass (Holdings) Limited | Hull | 2023 |
| Baldwin Holdings Limited | Keighley | 2017 |
| Baldwin Sharp Investments Limited | York | 2025 |
| Baldwin Smith Ltd | Bexhill-On-Sea | 2020 |
| Baldwins Group Limited | Slough | 2016 |
| Baldwyn Investments Ltd | Banbury | 2022 |
| Bale Insurance Brokers (Leicester) Limited | Nottinghamshire | 1946 |
| Bale Insurance Brokers Limited | Loughborough | 2000 |
| Balearics Limited | London | 2020 |
| Baleigh Holdings Limited | Harrogate | 2026 |
| Balens Insurance Finance Services Limited | Retford | 2008 |
| Balens Limited | Retford | 2003 |
| Balform Holdings Limited | Beaconsfield | 2020 |
| Balfour Beatty Pension Trust Limited | Prescot | 1948 |
| Balfour Capital Limited | London | 2024 |
| Balfour Corporate Finance Limited | Fareham | 2000 |
| Balfourkerr Group Limited | Portsmouth | 2014 |
| Balgarvie Solar Limited | West Sussex | 2023 |
| Balgores Commercial Finance Limited | Wickford | 2025 |
| Balgores Financial Services Limited | Wickford | 2025 |
| Balgranach Properties Limited | Aberdeen | 1998 |
| Balgray Holdings Limited | Kilmarnock | 2018 |
| Balguard Holdings Limited | Dunstable | 2020 |
| Balham Hill Holdings Ltd | Stoke-Sub-Hamdon | 2023 |
| Balharbour Limited | London | 2024 |
| Baliena Holdings Ltd | London | 2023 |
| Balikaya Holdings Ltd | Margate | 2018 |
| Balise Springs Limited | London | 2017 |
| Baljinder Singh Gill Wealth Management Ltd | Leicester | 2017 |
| Balk Investments Limited | Hove | 2021 |
| Balkan Holdings Ltd | London | 2025 |
| Balkan's Holdings Ltd | Swansea | 2026 |
| Balkh PAY Ltd | London | 2025 |
| Ball & Co Financial Planning Limited | Woking | 2019 |
| Ball & Co Property Group Ltd | Ashford | 2026 |
| Ball & White Holdings Limited | Maghull | 2023 |
| Ball Capital Investment Limited | Leek | 2011 |
| Ball Family Holdings Limited | London | 2024 |
| Ball Group Limited | London | 2023 |
| Ball Protection Limited | Harlow | 2024 |
| Ball UK Acquisition Limited | Luton | 2015 |
| Ballamilis Holdings Ltd | Magherafelt | 2023 |
| Ballance Capital Markets Limited | London | 2013 |
| Ballani Group Limited | Wigan | 2026 |
| Ballantine Associates Ltd | Kingsbridge | 2008 |
| Ballantine Wealth Management Limited | Taunton | 2018 |
| Ballantyne Brokers Ltd | London | 2020 |
| Ballantyne Equity Ltd | Somerton | 2026 |
| Ballantyne Holdings Limited | Middlesbrough | 2023 |
| Ballantyne Robinson Ltd | Boston | 2025 |
| Ballantyne Wealth Management Ltd | Cupar | 2018 |
| Ballanwood Finance Limited | Pembroke Dock | 2026 |
| Ballard Associates Ltd | Cheltenham | 2025 |
| Ballard Bay Holdings Ltd | Poole | 2024 |
| Ballard Evans Corporate Finance Limited | Altrincham | 2009 |
| Ballard Industries Limited | Farnham | 2015 |
| Ballard Investment Company Limited | Croydon | 2008 |
| Ballard Investment Holdings Limited | Lichfield | 2021 |
| Ballard Power Systems UK Limited | London | 2026 |
| Ballard Property Group Limited | Rickmansworth | 2025 |
| Ballard RMS Group Ltd | Corsham | 2025 |
| Ballard ROW Limited | Southampton | 2020 |
| Ballardie Associates Ltd | Richmond | 2015 |
| Ballards Investments Limited | London | 2018 |
| Ballast Nedam UK Ltd | Redhill | 2022 |
| Ballastri Limited | Harrogate | 2026 |
| Ballentine Holdings Limited | London | 2018 |
| Baller Holdings Ltd | Longfield | 2023 |
| Baller League International Ltd | London | 2024 |
| Ballerino Holdings Limited | Guildford | 2020 |
| Ballestra Advice Ltd | Milton Keynes | 2021 |
| Ballicom Group Limited | Coventry | 2025 |
| Ballincar Holdings Ltd | Southend-On-Sea | 2024 |
| Ballingdon Investment Management Limited | Ipswich | 2017 |
| Ballinger Group Holdings (UK) Ltd | London | 2020 |
| Ballinska Investments Ltd | London | 2025 |
| Ballintaggart Holdings Limited | Pitlochry | 2025 |
| Ballintemple Holdings Ltd | Newry | 2022 |
| Ballma Ltd | Warrington | 2002 |
| Ballndad Ltd | Cheltenham | 2021 |
| Balloo Investments (N.I.) Ltd | Belfast | 2019 |
| Balloon and Basket Limited | Rustington | 2024 |
| Ballou UK Investments Limited | Grantham | 2023 |
| Balls Pond Development Ltd | London | 2023 |
| Balltica Consulting Ltd | Liverpool | 2019 |
| Balltron Limited | Crowthorne | 1999 |
| Ballum Security Ltd | Lowestoft | 2021 |
| Bally K Ltd | Leicester | 2019 |
| Ballyalton Holdings Limited | Wilmslow | 2018 |
| Ballyards Holdings Ltd | Armagh | 2023 |
| Ballyballoo Limited | Belfast | 2018 |
| Ballybay Holdings Ltd | Newry | 2026 |
| Ballyboe Investments Ltd | London | 2023 |
| Ballyboes Holdings Limited | Derry | 2022 |
| Ballybryan House Holdings Ltd | Greyabbey | 2023 |
| Ballyclare Group Limited | London | 2013 |