| Briggs Industrial Footwear Limited | Wholesale & retail | 1944 |
| Bright & More Properties Ltd | Real estate | 2022 |
| Bright & Randall Limited | Real estate | 2007 |
| Bright Almond Care Ltd. | Health & social care | 2015 |
| Bright Bees Beaumont Lodge Ltd | Education | 2015 |
| Bright Bees Evington Ltd | Education | 2025 |
| Bright Bees Gipsy Lane Ltd | Education | 2026 |
| Bright Bees Nursery Ltd | Education | 2010 |
| Bright Bees Nursery Netherhall Ltd | Education | 2015 |
| Bright Blooms Design Limited | Wholesale & retail | 2025 |
| Bright Blue FOX Ltd | Information & communication | 2025 |
| Bright Books Accountancy Ltd | Professional & scientific | 2025 |
| Bright Caring Service Ltd | Health & social care | 2025 |
| Bright Clean Ltd | Wholesale & retail | 2022 |
| Bright Electrical Engineering Ltd | Manufacturing | 2024 |
| Bright Enterprises (UK) Limited | Hospitality | 1992 |
| Bright Estate Agents Limited | Real estate | 2012 |
| Bright Ginger Ltd | Information & communication | 2018 |
| Bright Green Space Limited | Manufacturing | 2020 |
| Bright Intergrated Care Ltd | Health & social care | 2014 |
| Bright Land Trading UK Ltd | Wholesale & retail | 2020 |
| Bright Learning Centre Limited | Education | 2014 |
| Bright Legal Investments Limited | Real estate | 2019 |
| Bright Legal Solicitors Limited | Professional & scientific | 2006 |
| Bright Looks Barbers Ltd | Other services | 2024 |
| Bright Matcha Ltd | Wholesale & retail | 2021 |
| Bright Motion Logistics Ltd | Wholesale & retail | 2026 |
| Bright Panipuri Limited | Hospitality | 2025 |
| Bright PV Tech Ltd | Construction | 2025 |
| Bright Sky Housing Group Limited | Hospitality | 2023 |
| Bright Solar Ltd | Construction | 2022 |
| Bright Superstore Limited | Wholesale & retail | 2024 |
| Bright Surgical Solutions Ltd | Health & social care | 2023 |
| Bright Ways Community CIC | Health & social care | 2022 |
| Bright Weave Limited | Manufacturing | 2019 |
| Bright-Beams Laser Technology Ltd | Manufacturing | 2022 |
| Brighter Smiles Ltd | Other services | 2012 |
| Brightgolgappa Limited | Hospitality | 2025 |
| Brighthold Solutions Ltd | Wholesale & retail | 2026 |
| Brightlife Healthcare Ltd | Health & social care | 2020 |
| Brightlingsea Professional Services Ltd | Administrative & support | 2015 |
| Brightmore Holdings Ltd | Administrative & support | 2019 |
| Brightnest Ventures Ltd | Wholesale & retail | 2026 |
| Brighton and RH Properties Ltd | Real estate | 2020 |
| Brightpapdichaat Limited | Hospitality | 2025 |
| Brightpath Ventures Ltd | Wholesale & retail | 2025 |
| Brightside Direct Lending Limited | Financial services | 2025 |
| Brightside Securities Limited | Administrative & support | 1910 |
| BRIGHTSIDE03 Limited | Real estate | 2019 |
| Brightsky Contracts Ltd | Administrative & support | 2026 |
| Brightstart Education Ltd | Professional & scientific | 2025 |
| Brightstone Solutions Limited | Professional & scientific | 2017 |
| Brightsurv Limited | Professional & scientific | 2018 |
| Brij Studios Ltd | Professional & scientific | 2024 |
| Brij Transport Ltd | Transport & logistics | 2025 |
| Brijing Services Limited | Administrative & support | 2023 |
| Brijwasi Limited | Wholesale & retail | 2014 |
| Brikabrak Ltd | Wholesale & retail | 2025 |
| Brilliant Homecare Ltd | Health & social care | 2025 |
| Brilliant Lady 2026 Limited | Hospitality | 2026 |
| Brilliant Quality Ltd | Construction | 2023 |
| Brimarie Properties Ltd | Real estate | 2025 |
| Brims Group Ltd | Hospitality | 2019 |
| Brindley's Equity Finance Limited | Administrative & support | 1995 |
| Bring IT to C.I.C. | Arts & recreation | 2023 |
| Bring ME Sunshine 2023 Limited | Hospitality | 2023 |
| Brinkhill Recommended Ltd | Transport & logistics | 2015 |
| Brinsworth Transport Ltd | Transport & logistics | 2014 |
| Brioland Limited | Professional & scientific | 1970 |
| Brisa Marina Ltd | Wholesale & retail | 2019 |
| Brisbane Flax Ltd | Wholesale & retail | 2025 |
| Brisket Yard Ltd | Hospitality | 2026 |
| Bristow Consulting Limited | Professional & scientific | 2025 |
| Bristow Developments (Stanmore Gardens) Limited | Construction | 2025 |
| Bristow Developments Limited | Construction | 2025 |
| Bristow Johnson Ltd. | Professional & scientific | 2013 |
| Brit Asia Entertainment Ltd | Information & communication | 2018 |
| Brit Development Group Ltd | Construction | 2022 |
| Brit Haulage Limited | Transport & logistics | 2025 |
| Brit Hotels Ltd | Hospitality | 2017 |
| Brit Nexus Group Ltd | Wholesale & retail | 2026 |
| Brit Pass Ltd | Information & communication | 2023 |
| Brit Records Ltd | Manufacturing | 2019 |
| Brit SEC Security Management Limited | Administrative & support | 2004 |
| Brit Shop Limited | Wholesale & retail | 2024 |
| Britain Group Ltd | Information & communication | 2020 |
| Britain's Heritage Ltd | Other services | 2022 |
| Britannia Buffet Services Limited | Hospitality | 2003 |
| Britannia Cleaning Services (Midlands) Ltd | Administrative & support | 2010 |
| Britannia Developer Ltd | Real estate | 2019 |
| Britannia Eduglobal Group Ltd | Information & communication | 2026 |
| Britannia Hide Ltd | Manufacturing | 2025 |
| Britannia Labels Limited | Manufacturing | 2001 |
| Britannia Lift Services (U.K.) Limited | Professional & scientific | 1990 |
| Britanniashaw West Properties Ltd | Construction | 2020 |
| Britannic Brands Ltd | Wholesale & retail | 2024 |
| Britelvor Ltd | Wholesale & retail | 2025 |
| Britex Group Ltd | Wholesale & retail | 2025 |
| British Cardiovascular Intervention Society | Other services | 2010 |
| British Firefighter Challenge C.I.C. | Public administration | 2020 |