| Bowmark Growth Investment Partnership Nominees Limited | London | 2021 |
| Bowmark Growth Investment Partnership-A, Nominees Limited | London | 2021 |
| Bowmark Growth Investment Partnership-B, Nominees Limited | London | 2024 |
| Bowmark Growth Investment Partnership-C, Nominees Limited | London | 2024 |
| Bowmark Growth Investment Partnership-D, Nominees Limited | London | 2025 |
| Bowmark Growth Partners Nominees Limited | London | 2021 |
| Bowmark Investment Partnership IV Nominees Limited | London | 2016 |
| Bowmark Investment Partnership V Nominees Limited | London | 2016 |
| Bowmark Investment Partnership VI, Nominees Limited | London | 2019 |
| Bowmark Investment Partnership-G, Nominees Limited | London | 2018 |
| Bowmark Investment Partnership-H, Nominees Limited | London | 2018 |
| Bowmark Investment Partnership-I, Nominees Limited | London | 2018 |
| Bowmark Investment Partnership-J, Nominees Limited | London | 2018 |
| Bowmark Investment Partnership-L, Nominees Limited | London | 2021 |
| Bowmark Investment Partnership-M, Nominees Limited | London | 2021 |
| Bowmark Investment Partnership-N, Nominees Limited | London | 2024 |
| Bowmark Investment Partnership-O, Nominees Limited | London | 2025 |
| Bowmoor Capital Limited | London | 2022 |
| Bowmore Asset Management Limited | Flax Bourton | 2014 |
| Bowmore Financial Planning Limited | Flax Bourton | 1982 |
| Bowmore Holdco Limited | London | 2022 |
| Bowmore Investments Limited | Lytham St Annes | 2015 |
| Bowmore Jvco Limited | London | 2022 |
| Bowmore Topco Limited | London | 2022 |
| Bowmore UK 1 Limited | London | 2019 |
| Bowmore UK 2 Limited | London | 2019 |
| Bowmore UK 3 Limited | London | 2018 |
| Bowmore Wealth Group Limited | Flax Bourton | 1990 |
| Bown & Co Holdings Ltd | Lincoln | 2025 |
| Bown Holdings Limited | Poole | 2015 |
| Bownes Holding Company Limited | Dudley | 2013 |
| Bowness Bay Investments (Holdings) Limited | Kendal | 2016 |
| Bowness Hospitality Holdings Ltd | Blackburn | 2023 |
| Bownham Mead Mortgages Ltd | Bath | 2025 |
| Bowood Ventures Ltd | Windsor | 2022 |
| Bowrey Future Proofing Ltd | Bath | 2023 |
| Bowring & Associates Limited | Braintree | 2010 |
| Bowring Brookes Limited | Reading | 2026 |
| Bowring Solutions Limited | Brentwood | 2025 |
| Bowriver Limited | Reading | 2019 |
| Bowsaw Bourbon Holdco Limited | Belfast | 2025 |
| Bowser & Ward Limited | Grantham | 2023 |
| Bowsprit Partners Limited | London | 2004 |
| Bowtec Group Limited | Bridgend | 2025 |
| Bowthorpe Investment Group Ltd | Farnham | 2021 |
| Bowtie UK Holdco Limited | London | 2021 |
| Bowzercorp Ltd | Newcastle Upon Tyne | 2024 |
| Box 2 Holdings Ltd | Brighton | 2020 |
| Box Actuarial Limited | Market Harborough | 2017 |
| Box Bidco Limited | Welham Green | 2021 |
| Box City (South) Ltd | Longfield | 2026 |
| Box City Group Ltd | Longfield | 2026 |
| Box City Property Ltd | Longfield | 2026 |
| Box Clever Trustees Limited | Bristol | 2001 |
| Box Construction (Holdings) Limited | Derby | 2023 |
| Box Delta Holdings Ltd | Tunbridge Wells | 2023 |
| Box Delta Ltd | Tunbridge Wells | 2020 |
| Box END Holdings Limited | London | 2025 |
| Box Family Holdings Limited | Stockport | 2025 |
| Box Finance Limited | Rayleigh | 2025 |
| Box Financial Services Limited | Romford | 2021 |
| Box Group Holdings Limited | Winchester | 2015 |
| Box Hedgeco Limited | Hertfordshire | 2021 |
| Box Hill Capital Limited | London | 2016 |
| Box Holdco Limited | Welham Green | 2021 |
| Box Investment Holdings Limited | Harrogate | 2019 |
| Box IT UP Limited | Middleton | 2020 |
| Box Legal Lending Limited | Harlow | 2022 |
| Box Legal Limited | Harlow | 2003 |
| Box Litho Group Limited | Merthyr Tydfil | 2021 |
| Box Midco Limited | Hertfordshire | 2021 |
| Box of Treats Investment Group Limited | Glasgow | 2023 |
| Box One Limited | London | 2007 |
| Box Property Capital Limited | Bristol | 2024 |
| Box Topco Limited | Welham Green | 2021 |
| Box Tree Consultancy Ltd | 50 Holland Street | 2012 |
| Box Tree Investments | Leeds | 2014 |
| Box Verte Limited | Maidstone | 2018 |
| Box+ III Holdings (UK) Limited | London | 2021 |
| Boxall Holdings Ltd | Haslemere | 2021 |
| Boxbuild Holdings Limited | Oxted | 2017 |
| Boxclever Holdings Ltd | Dudley | 2025 |
| Boxe Holdings Ltd | Norwich | 2024 |
| Boxed Holdings Limited | Littlehampton | 2018 |
| Boxed Light Holdings Limited | Peterborough | 2021 |
| Boxed Mortgages Ltd | Lincoln | 2025 |
| Boxed Solutions Limited | Bristol | 2023 |
| Boxeley Limited | Manchester | 2022 |
| Boxell Holdings Limited | Bridgwater | 2020 |
| Boxer & Boxer Holdings Limited | Midhurst | 2025 |
| Boxer Holdings Limited | Old Hatfield | 2020 |
| Boxerfs Ltd | West Wickham | 2023 |
| Boxford Machinery Limited | Sowerby Bridge | 2020 |
| Boxfresh Holdings Limited | London | 2024 |
| Boxfund Limited | Worthing | 2022 |
| Boxley Wealth Management Ltd | Maidstone | 2021 |
| Boxmoor Investments Ltd | Bucks | 2018 |
| Boxsquare Limited | Tonbridge | 2008 |
| Boxster Holdings Limited | Manchester | 2024 |
| Boxster Limited | Manchester | 2016 |