| Ballyeavon Properties Limited | Sawbridgeworth | 2015 |
| Ballyfrenis Investment Limited | Donaghadee | 2024 |
| Ballygarvey Holdings Ltd | Ballymena | 2020 |
| Ballygarvey Investments Limited | Ballymena | 1908 |
| Ballygruby Investments Ltd | Magherafelt | 2019 |
| Ballyh Holdings Limited | Londonderry | 2025 |
| Ballykeel BEG Holding Company Limited | Belfast | 2019 |
| Ballykeigle Investment Group Limited | Leicestershire | 2025 |
| Ballykennedy Holdings Limited | Ballymena | 2023 |
| Ballylig Holdings | Ballymena | 2020 |
| Ballylynch Capital Limited | Grantham | 2011 |
| Ballymacaldrick Group Ltd | Ballymena | 2026 |
| Ballymena Investment Centre Limited | Ballymena | 2014 |
| Ballymena Mortgage & Financial Services Ltd | Ballymena | 2023 |
| Ballymenoch Holdings Limited | Belfast | 2026 |
| Ballymongan Ltd | Scarborough | 2025 |
| Ballymore (Edgware Holdings) Limited | London | 2020 |
| Ballymore Brentford Waterside Holdings Limited | London | 2019 |
| Ballymore Great Eastern Partner Limited | London | 2018 |
| Ballymore Leamouth Holdings Limited | London | 2016 |
| Ballymore Leamouth Limited Partner Limited | London | 2016 |
| Ballymore Limmo Limited | London | 2025 |
| Ballymore Marsh Wall Limited | London | 2017 |
| Ballymore One Embassy Gardens Limited | London | 2017 |
| Ballymore Oxley Deanston Holding Company Limited | London | 2021 |
| Ballynagilly | London | 2024 |
| Ballynameen Holdings Limited | Garvagh | 2017 |
| Ballynashee Investments Ltd | Bangor | 2025 |
| Ballyness Holdings Limited | Bushmills | 2019 |
| Ballynoe Ltd | Antrim | 2023 |
| Ballyrobin Holdings Unlimited | Muckamore | 2022 |
| Ballyrush Properties Ltd | Newtownards | 2026 |
| Ballysallagh Consultants Ltd | Belfast | 2025 |
| Ballyscullion Property Investments Ltd | Bellaghy | 2022 |
| Ballyvesey Holdings Limited | Doncaster | 1995 |
| Ballywillan Services Limited | London | 2023 |
| Balmain Estates Limited | Belfast | 2017 |
| Balmain Underwriting (Nameco NO.382) Limited | Grantham | 1999 |
| Balman Holding UK Ltd | Milton Keynes | 2021 |
| Balmer Holdings Limited | Weston Super Mare | 1983 |
| Balmer Holdings Staffordshire Limited | Stoke-On-Trent | 2024 |
| Balmerino Capital Ltd | Newport-On-Tay | 2024 |
| Balmerino Limited | Newport On Tay | 2020 |
| Balmers Garden Machinery Holdings Limited | Bury | 2012 |
| Balmforth Financial Services Limited | Clitheroe | 2017 |
| Balmoor Ltd | Buckingham | 2017 |
| Balmoral Asset Management Limited | Edinburgh | 1998 |
| Balmoral Comfort Holdings Limited | Bradford | 2025 |
| Balmoral Court Freehold Limited | London | 2015 |
| Balmoral Global Capital Limited | St. Albans | 2017 |
| Balmoral Group Holdings Limited | Aberdeen | 2004 |
| Balmoral Healthcare Holdings Ltd | Belfast | 2021 |
| Balmoral Holdings Group Limited | Edinburgh | 2025 |
| Balmoral Holdings UK Ltd | Warwick | 2023 |
| Balmoral Renewables Limited | Aberdeen | 2020 |
| Balnageith Advisers Limited | London | 2019 |
| Balnave & Cumming Limited | Kilmacolm | 1991 |
| Balneath Enterprises and Services Limited | Eastbourne | 2025 |
| Balnyx Ltd | London | 2026 |
| Baloban Resources Limited | London | 2024 |
| Baloch Holdings (UK) Limited | Luton | 2017 |
| Baloo Trading Ltd | London | 2022 |
| Balpa Financial Solutions Limited | West Drayton | 1987 |
| Balquhidder Consultants Limited | Wakefield | 2017 |
| Balquhidder Group Limited | Billingham | 2022 |
| Balquhidder Investments Limited | Billingham | 2022 |
| Balsa Commercial Finance Limited | Manchester | 2022 |
| Balsam Holdings Ltd | Hambrook | 2025 |
| Balscote Trustees (NO1) Ltd | Southampton | 2022 |
| Balscote Trustees (NO2) Ltd | Southampton | 2022 |
| Balshaw Investments Ltd | Bolton | 2025 |
| Balsto Ltd. | London | 2018 |
| Balstone Holdings Limited | Kings Langley | 2022 |
| Baltasound Ltd | Woodford Green | 2021 |
| Balthazar Brothers Group Ltd | Liverpool | 2022 |
| Balthazar Capital Partners Ltd. | London | 2003 |
| Balthazar Group Limited | London | 2022 |
| Baltic Bidco Limited | Telford | 2022 |
| Baltic Bridge Financial Ltd | Edinburgh | 2025 |
| Baltic Classifieds Group PLC | Worthing | 2021 |
| Baltic Exchange Derivatives Trading Limited | London | 2008 |
| Baltic Holdco Limited | Telford | 2022 |
| Baltic Invest Limited | London | 2020 |
| Baltic Investment Holdings Limited | London | 2021 |
| Baltic IT Sales Ltd | London | 2016 |
| Baltic Midco Limited | Telford | 2022 |
| Baltic Mortgage Solutions Limited | Wallsend | 2008 |
| Baltic Professional Investment (UK) Limited | Chester | 2021 |
| Baltic Sea Offshore Holdco Limited | London | 2014 |
| Baltic Sea Offshore Investment Limited | London | 2014 |
| Baltic Venture Capital Ltd | London | 2017 |
| Baltic Ventures Accelerator Nominees Ltd | London | 2023 |
| Baltimore Holdings Limited | Bristol | 2018 |
| Balto Holdings Ltd | London | 2022 |
| Baltra Bidco Limited | London | 2023 |
| Balu-Bal Ltd | London | 2017 |
| Balvernie Holdings Limited | Falmouth | 2023 |
| Balvernie Ltd | Falmouth | 2016 |
| Balviashapura Enterprise Ltd | Hounslow | 2024 |
| Balvinder Gill Limited | Clerkenwell | 2015 |