| Brian Jackson Decorators Holdings Limited | Leeds | 2023 |
| Brian Jeffs Finance Limited | Solihull | 2000 |
| Brian Johnston & Co (Insurance Brokers) Limited | Surrey | 1986 |
| Brian Johnston & Co. (Insurance Services) Limited | Surrey | 1972 |
| Brian Kelly Consulting Ltd | Bangor | 2013 |
| Brian Marshall & Sons Holdings Limited | Brighton | 2023 |
| Brian Mellon Financial Ltd | Glasgow | 2006 |
| Brian Mellor Financial Services Limited | Leek | 2011 |
| Brian Mole Independent Financial Advisers Ltd. | London | 1994 |
| Brian N. Townley and Company Limited | Buckinghamshire | 1980 |
| Brian Palmer Holdings Ltd | Stowmarket | 2023 |
| Brian Pears Limited | Barrow-In-Furness | 2015 |
| Brian Radford Investments Limited | Shrewsbury | 1987 |
| Brian S Pope Holdings Limited | Stockport | 2026 |
| Brian S Pope Investments (Holdings) Limited | Stockport | 2026 |
| Brian S Pope Investments Limited | Stockport | 2026 |
| Brian S Pope Property (Holdings) Limited | Stockport | 2026 |
| Brian S Pope Property Limited | Stockport | 2026 |
| Brian Scott & SON (Garvagh) Ltd | Garvagh | 2016 |
| Brian Scott & SON Ltd | Garvagh | 2016 |
| Brian Thornhill & SON Insurance Brokers Limited | Mirfield | 2014 |
| Brian W Harrison Ltd | Westbourne,Bournemouth | 1962 |
| Brian Whyte Holdings Ltd | Glasgow | 2025 |
| Brian Williams Holdings Limited | Lichfield | 1999 |
| Brianplant Holdings Limited | Pocklington | 2018 |
| Briant Investments Limited | Chichester | 2016 |
| Briar Capital Limited | St. Albans | 2025 |
| Briar Homes (Investments) Limited | Glasgow | 2021 |
| Briarcliffe Credit Partners Emea Ltd | London | 2025 |
| Briarcot Holdings Limited | Scarborough | 2020 |
| Briarcroft Holdings Limited | Altrincham | 2026 |
| Briareus Holding Ltd | London | 2026 |
| Briars Financial Planning Ltd | Otley | 2013 |
| Briarwood Asset Finance Limited | Inverurie | 2016 |
| Briarwood Holdings Limited | Wakefield | 2019 |
| Briarwood Janes Holdings & Co Ltd | Highbridge | 2022 |
| Briarwood Partners Alternatives Limited | Maidenhead | 2022 |
| Briarwood Partners Limited | Maidenhead | 2019 |
| Bribarbo Limited | Great Yarmouth | 2019 |
| Brical Holdings Limited | Coventry | 2020 |
| Brice Robinson Holdings Ltd | Kidlington | 2020 |
| Briceamery Capital Ltd | London | 2005 |
| Brick & Wealth Ltd | Newport | 2025 |
| Brick and Field Ltd | Colchester | 2024 |
| Brick by Brick Finance Ltd | London | 2017 |
| Brick Kiln Composites 2025 Ltd | Cheltenham | 2025 |
| Brick Kiln Composites Group Ltd | Cheltenham | 2025 |
| Brick Lane Capital Management Limited | London | 2014 |
| Brick Lane E1 Ltd | Harlow | 2023 |
| Brick Manor Limited | Chichester | 2021 |
| Brick Street Dentures Holdings Ltd | Dudley | 2025 |
| Brick-Tie EOT Limited | Leeds | 2022 |
| BRICK2BRICK Mortgage Solutions Ltd | London | 2019 |
| Brickell Group Ltd | London | 2022 |
| Brickendon Grange (Holdings) Limited | Nr Hertford | 1970 |
| Brickfield Group Ltd | Camberley | 2026 |
| Brickfield Holdings (East Anglia) Limited | Bury St. Edmunds | 2025 |
| Brickfield House Ltd | Lisburn | 2020 |
| Brickflow Limited | London | 2019 |
| Brickfold Capital Ltd | Chadwell Heath | 2026 |
| Brickhills Holding Ltd | Scunthorpe | 2026 |
| Brickhouse Holdings Investments Limited | Harrow | 2023 |
| Brickhouse Mortgages Ltd | Upminster | 2020 |
| Brickland Limited | Liverpool | 2017 |
| Bricklane Investment Services Ltd | London | 2016 |
| Bricklane Regional Holdings Limited | London | 2019 |
| Brickman Insurance Services Ltd | Barnet | 2019 |
| Brickmort Development Consulting Ltd | London | 2024 |
| Bricknell Enterprises Limited | Hinckley | 2022 |
| Brickowner DM 1 Limited | London | 2020 |
| Brickowner DM 2 Limited | London | 2020 |
| Brickowner Holdings Limited | London | 2019 |
| Brickowner IM Limited | London | 2020 |
| Brickowner Investments Limited | London | 2016 |
| Bricks and Mortar Lending Limited | Shepton Mallet | 2018 |
| Bricks and Mortar Mortgages Limited | Glasgow | 2017 |
| Bricks and Mortar Property Group Limited | Leamington Spa | 2020 |
| Bricks and Mortgages Ltd | Milton Keynes | 2018 |
| Bricks and Motor Insurance Brokers Ltd | Bury | 2003 |
| Bricks and Sticks Limited | Hereford | 2021 |
| Bricks Capital Holdings 2 Limited | Chatham | 2022 |
| Bricks Finance Holdings Limited | Exeter | 2024 |
| Bricks Finance Limited | Exeter | 2014 |
| Bricks Group Holdings Limited | London | 2022 |
| Bricks Holdings Limited | Bury | 2023 |
| Bricks Leicester Capital Limited | London | 2019 |
| Bricks Loans Limited | Exeter | 2024 |
| Bricks Silverstone Capital Limited | Chatham | 2018 |
| Bricks Silverstone Holdco 1 Limited | Hemel Hempstead | 2021 |
| Bricks Silverstone Holdco 2 Limited | Hemel Hempstead | 2021 |
| Bricks Silverstone Holdco 3 Limited | Hemel Hempstead | 2023 |
| Bricks Silverstone Holdco 4 Limited | Hemel Hempstead | 2023 |
| Bricks Swansea Capital Limited | London | 2018 |
| Bricks UK SPV Limited | London | 2026 |
| Bricks Ventures Ltd | Leyland | 2024 |
| Brickstone Capital Limited | London | 2015 |
| Brickstone Property Limited | Worcester Park | 2021 |
| Bricksworth Mortgage Company Ltd | Gravesend | 2025 |
| Brickvest Ltd. | London | 2014 |
| Brickvest MB1 Ltd | London | 2015 |