| Bardan Holdings Limited | Ipswich | 2024 |
| Barden Biomass Holdings Limited | Carnforth | 2017 |
| Barden Foods Limited | Leeds | 2021 |
| Bardic Holdings Limited | Swansea | 2025 |
| Bardon & Lannister Investments Ltd | Harrow | 2025 |
| Bardron Limited | London | 2022 |
| Bardsley Limited | Tonbridge | 2018 |
| Bardwell Mortgage Solutions Ltd | Bourne | 2016 |
| Bare Bones Holding Ltd | Sheffield | 2025 |
| Bare Bread Limited | Worthing | 2025 |
| Bare Group Holdings Limited | Preston | 2025 |
| Bare Health Holdings Ltd | Penrith | 2024 |
| Bare Naked Money Limited | Hungerford | 2022 |
| Barefoot Broker Limited | Islington | 2020 |
| Barefoot Coaching Holdings Limited | Derby | 2023 |
| Bareham Family Company Limited | Tonbridge | 2017 |
| Bareham Independent Financial Advisers Limited | Leeds | 2020 |
| Barents Leasing Limited | London | 2002 |
| Barentsburg Investments Limited | Ipswich | 2019 |
| Barentz Finco UK Limited | London | 2019 |
| Barerock Holdings Limited | Halifax | 2019 |
| Barerock Limited | Halifax | 2020 |
| Baresi Holdings Ltd | Leeds | 2025 |
| Baretts Holdings Limited | Burton-On-Trent | 2024 |
| Barfair Limited | London | 1998 |
| Barfield Enterprises Ltd | Telford | 2023 |
| Barfield Financial Advisors Limited | Northampton | 1995 |
| Barfield Holdings Ltd | Loughborough | 2021 |
| Barfield Wealth Limited | Northampton | 2017 |
| Bargain Munky Limited | Birmingham | 2014 |
| Bargeton Group Limited | Edinburgh | 2026 |
| Barham Court Investments Limited | Coventry | 2025 |
| Barham Investment Group Ltd | Oldham | 2024 |
| Barham Private Finance Ltd | West Wickham | 2024 |
| Barham Stocks Ltd | Cambridge | 2025 |
| Barhams Financial Services Limited | High Wycombe | 2001 |
| Barhatch Limited | Bury St Edmunds | 2020 |
| Bariatric Surgery Limited | Warrington | 2013 |
| Barilla International Limited | London | 2020 |
| Barille Ltd | Barnet | 2023 |
| Barineli Ltd | London | 2023 |
| Baring 52ND Asset Management Ltd | London | 2024 |
| Baring Asset Management Limited | London | 1994 |
| Baring Fund Managers Limited | London | 1968 |
| Baring Group Limited | London | 2016 |
| Baring International Investment Limited | London | 1979 |
| Baring Investment Services Limited | London | 1988 |
| Barings (U.K.) Limited | London | 1995 |
| Barings Core Property UK Reit Limited | London | 2024 |
| Barings Distinct Direct Lending Holdco 1 Limited | London | 2023 |
| Barings Emerging Emea Opportunities PLC | London | 2002 |
| Barings Europe Limited | London | 2017 |
| Barington & Lowell Investments Ltd | London | 2025 |
| Barinthus Biotherapeutics PLC | Altrincham | 2021 |
| Baritstone Finance Ltd | London | 2025 |
| Barivan Limited | Thames Ditton | 1983 |
| Barjane International Group Limited | London | 2016 |
| Barjer International Group Investments Limited | Southampton | 2026 |
| Bark & Co Holdings Ltd | London | 2024 |
| Bark Consulting Ltd | Salisbury | 2011 |
| Bark's Group Limited | Wallasey | 2021 |
| Bark's Investments Ltd | Wallasey | 2021 |
| Barkal Holdings Ltd | Edinburgh | 2024 |
| Barkat Ventures Ltd | Birmingham | 2017 |
| Barkby Holdings Limited | Leicester | 2023 |
| Barkdene Limited | Sutton | 1984 |
| Barke Brothers Holdings Limited | Shoeburyness | 2013 |
| Barke Holdings Limited | Ipswich | 2023 |
| Barker & Broad Ltd | Abingdon | 2003 |
| Barker & Evans Holdings Limited | Banbury | 2023 |
| Barker & Sons Properties Limited | St Helens | 2012 |
| Barker & Stone Holdings Ltd | Sudbury | 2025 |
| Barker and Company Financial Services Ltd. | Eastleigh | 2005 |
| Barker Capital Limited | London | 2025 |
| Barker Fernandez Group Ltd | Leamington Spa | 2022 |
| Barker Fleming Group Ltd | Leicester | 2021 |
| Barker Group Limited | London | 2022 |
| Barker Langham Group Limited | London | 2021 |
| Barker Maule Limited | Newark | 2009 |
| Barker Maule Wealth Management Limited | Newark | 2024 |
| Barker Mortgages Ltd | Bury | 2022 |
| Barker Owen Limited | Rochdale | 2015 |
| Barker Paraplanning Ltd | London | 2025 |
| Barker Support Services Limited | Telford | 2001 |
| Barker Whyte Group Ltd | London | 2022 |
| Barkerbility Limited | Bradford | 2014 |
| Barkerend Travel Ltd | Bradford | 2021 |
| Barkers Finance Ltd | Stoke-On-Trent | 2016 |
| Barkestone Associates (Wealth Management) Limited | Nottingham | 2009 |
| Barkhill Capital Limited | Rickmansworth | 2025 |
| Barkhill Group Limited | London | 2023 |
| Barkhill Holdings Limited | Kensington | 2025 |
| Barking Brawn Limited | Chelmsford | 2021 |
| Barking MAD Holdings Limited | Dorset | 2019 |
| Barkip Biogas Holding Limited | Buntingford | 2019 |
| Barkis Partners Limited | Newbury | 2025 |
| Barkite Limited | London | 2018 |
| Barkley Corporation Limited | Blackpool | 2018 |
| Barkley's Financial Services Ltd | Camberley | 2020 |
| Barkridge UK Ltd | Leeds | 2003 |