| B Greatorex Holdings Ltd | Financial services | 2026 |
| B S K Housings Ltd | Real estate | 2024 |
| B.G. Rodwell Limited | Transport & logistics | 1972 |
| Bagri Stores Ltd | Wholesale & retail | 2022 |
| Bags of FUN Ltd | Wholesale & retail | 2019 |
| Bagworth Community Centre Trust (2013) Limited | Arts & recreation | 2013 |
| Bagworth Pizza Limited | Hospitality | 2025 |
| Bagworth Village Store Ltd | Wholesale & retail | 2023 |
| BAK2BASIKS Ltd | Extraterritorial | 2010 |
| Bakewell Homes Limited | Real estate | 2021 |
| Bakewells Trading Limited | Wholesale & retail | 2025 |
| Barber Landscapes Ltd | Administrative & support | 2010 |
| Bardon 22 (2008) Limited | Real estate | 2008 |
| Bardon Commercial's Limited | Wholesale & retail | 2025 |
| Bardon Hill House Ltd | Real estate | 2025 |
| Bardon Loler and Puwer Services Ltd | Professional & scientific | 2026 |
| Bardon Property Solutions Ltd | Real estate | 2026 |
| Bardon Truck Park Ltd | Other services | 2020 |
| Barn View Cafe Ltd | Hospitality | 2024 |
| Barratt Bristol Limited | Construction | 1946 |
| Barratt Central Limited | Professional & scientific | 1962 |
| Barratt Chester Limited | Construction | 1958 |
| Barratt Commercial Limited | Construction | 1920 |
| Barratt Construction (Southern) Limited | Construction | 1946 |
| Barratt Corporate Secretarial Services Limited | Construction | 2006 |
| Barratt Developments (International) Limited | Professional & scientific | 1980 |
| Barratt Developments Limited | Professional & scientific | 2024 |
| Barratt Dormant (Atlantic Quay) Limited | Construction | 2001 |
| Barratt Dormant (Blackpool) Limited | Construction | 2002 |
| Barratt Dormant (Harlow) Limited | Construction | 2001 |
| Barratt Dormant (Tyers Bros. Oakham) Limited | Extraterritorial | 1970 |
| Barratt Dormant (Walton) Limited | Construction | 2003 |
| Barratt Dormant (WB Construction) Limited | Extraterritorial | 1982 |
| Barratt Dormant (WB Developments) Limited | Construction | 1979 |
| Barratt Dormant (WB Properties Developments) Limited | Extraterritorial | 1979 |
| Barratt Dormant (WB Properties Northern) Limited | Extraterritorial | 1985 |
| Barratt East Anglia Limited | Construction | 1930 |
| Barratt East Midlands Limited | Construction | 1954 |
| Barratt Eastern Counties Limited | Construction | 1965 |
| Barratt Evolution Limited | Construction | 1999 |
| Barratt Leeds Limited | Professional & scientific | 1963 |
| Barratt London Limited | Construction | 1983 |
| Barratt Manchester Limited | Professional & scientific | 1960 |
| Barratt Metropolitan LLP | | 2006 |
| Barratt Newcastle Limited | Construction | 1959 |
| Barratt North London Limited | Construction | 1981 |
| Barratt Northampton Limited | Construction | 1949 |
| Barratt Northern Limited | Professional & scientific | 1929 |
| Barratt Norwich Limited | Professional & scientific | 1971 |
| Barratt Poppleton Limited | Construction | 1971 |
| Barratt Preston Limited | Professional & scientific | 1959 |
| Barratt Properties Limited | Construction | 1963 |
| Barratt Redrow Holdings Limited | Professional & scientific | 2024 |
| Barratt Redrow PLC | Construction | 1958 |
| Barratt South London Limited | Construction | 1968 |
| Barratt South Wales Limited | Construction | 1962 |
| Barratt South West Limited | Professional & scientific | 1983 |
| Barratt Southern Counties Limited | Construction | 1963 |
| Barratt Southern Limited | Construction | 1968 |
| Barratt Southern Properties Limited | Construction | 1963 |
| Barratt Special Projects Limited | Professional & scientific | 1982 |
| Barratt ST Mary's Limited | Construction | 1991 |
| Barratt ST Paul's Limited | Construction | 1988 |
| Barratt Sutton Coldfield Limited | Construction | 1964 |
| Barratt Urban Construction (East London) Limited | Construction | 1983 |
| Barratt Urban Construction (Northern) Limited | Professional & scientific | 1972 |
| Barratt Wates (East Grinstead) Limited | Construction | 2002 |
| Barratt Wates (East Grinstead) NO.2 Limited | Construction | 2010 |
| Barratt Wates (Horley) Limited | Construction | 2006 |
| Barratt Wates (Lindfield) Limited | Construction | 2013 |
| Barratt Wates (Worthing) Limited | Construction | 2012 |
| Barratt West Midlands Limited | Construction | 1957 |
| Barratt Woking Limited | Construction | 1962 |
| Barratt York Limited | Construction | 1963 |
| Barric Investments Ltd | Financial services | 2024 |
| Barriers Online Ltd | Construction | 2020 |
| Bart 225 Limited | Construction | 2001 |
| Bartlett Motorsport Ltd | Wholesale & retail | 2024 |
| Base East Central Rochdale LLP | | 2006 |
| Base Hattersley LLP | | 2006 |
| Base Regeneration LLP | | 2006 |
| Base Werneth Oldham LLP | | 2006 |
| Basildon Regeneration (Barratt Wilson Bowden) Limited | Construction | 2006 |
| BAV Medical Ltd | Wholesale & retail | 2024 |
| Baxter and Baxter Construction Ltd | Construction | 2016 |
| BB Brothers Ltd | Construction | 2021 |
| BB3 Holdings Ltd | Financial services | 2017 |
| BBQ Grill Ltd | Hospitality | 2024 |
| BCB Director Services Ltd | Professional & scientific | 2023 |
| BDW (F.R. Commercial) Limited | Construction | 2006 |
| BDW (F.R.) Limited | Construction | 2006 |
| BDW Trading Limited | Construction | 1995 |
| Bdwzest Developments LLP | | 2013 |
| Bdwzest LLP | | 2013 |
| BE Great Training Ltd | Education | 2024 |
| Beaconrise Support Services Limited | Health & social care | 2026 |
| Beard & Coles Financial Practice Limited | Financial services | 2003 |
| Beaumont Bespoke Build Ltd | Construction | 2021 |
| Beehive Builders Ltd | Real estate | 2025 |
| Bees Buzz Limited | Agriculture & fishing | 2021 |