| Blucharis Consulting Limited | Health & social care | 2020 |
| Bludline Audio Ltd | Information & communication | 2021 |
| Blue & Berry Art CIC | Wholesale & retail | 2025 |
| Blue & Sky Limited | Energy | 2006 |
| Blue Almond Trade Ltd | Wholesale & retail | 2025 |
| Blue ALP Ltd. | Wholesale & retail | 2014 |
| Blue Anchor Horwich Ltd | Hospitality | 2021 |
| Blue APE Properties Ltd | Real estate | 2019 |
| Blue Apple Printing Ltd | Manufacturing | 2012 |
| Blue Asteroids Ltd | Manufacturing | 2018 |
| Blue Balance Solutions Limited | Professional & scientific | 2019 |
| Blue Bay (NW) Ltd | Hospitality | 2023 |
| Blue Bay World Limited | Wholesale & retail | 2026 |
| Blue Bell Place Car Park Limited | Real estate | 2021 |
| Blue Bliss Ltd | Wholesale & retail | 2025 |
| Blue Bridge Facility Management Ltd | Other services | 2023 |
| Blue Bridge Solution Services Limited | Administrative & support | 2025 |
| Blue Bubbles Valet Ltd | Administrative & support | 2020 |
| Blue Cardamom Limited | Professional & scientific | 2022 |
| Blue Cargo Ltd | Transport & logistics | 2019 |
| Blue Certificate Ltd | Hospitality | 2019 |
| Blue Chip Estates Limited | Real estate | 2022 |
| Blue Chip Inversiones Ltd | Real estate | 2020 |
| Blue Chip Marketing (UK) Limited | Professional & scientific | 2002 |
| Blue Cocktail Group (Holdings) Limited | Financial services | 2024 |
| Blue Cocktail Group Limited | Hospitality | 2023 |
| Blue Consultoria EM Intercambios Ltd | Hospitality | 2022 |
| Blue Crown Pizzeria Ltd | Hospitality | 2025 |
| Blue Dawn Developments Ltd | Construction | 2021 |
| Blue Dawn Marine Limited | Administrative & support | 2024 |
| Blue Desserts Manchester Ltd | Hospitality | 2022 |
| Blue Diomond Ltd | Wholesale & retail | 2025 |
| Blue Distribution Ltd | Wholesale & retail | 2025 |
| Blue Dolphin Services Limited | Construction | 2016 |
| Blue Dream Company Ltd | Wholesale & retail | 2024 |
| Blue Egret Limited | Construction | 2025 |
| Blue Elachi Ltd | Hospitality | 2021 |
| Blue Emergency Cover Limited | Other services | 2023 |
| Blue Fashions MCR Ltd | Wholesale & retail | 2023 |
| Blue Flame Investments Ltd | Energy | 2013 |
| Blue Flames Heating & Plumbing Ltd | Construction | 2021 |
| Blue Flamingo Properties Limited | Real estate | 2018 |
| Blue Flash Technology Co., Ltd | Wholesale & retail | 2026 |
| Blue Fountain for Information Technology Industry Ltd | Wholesale & retail | 2026 |
| Blue Frost Limited | Construction | 2025 |
| Blue Fruit & VEG Ltd | Wholesale & retail | 2026 |
| Blue Gate 2025 Ltd | Real estate | 2025 |
| Blue Gate Capital Number One Property LP | | 2008 |
| Blue Gemini Ltd | Wholesale & retail | 2024 |
| Blue Glass Property Limited | Real estate | 2025 |
| Blue Horizon Investment Partners Ltd | Extraterritorial | 2026 |
| Blue Horizon Lettings Ltd | Real estate | 2024 |
| Blue Horse Maintenance Services Limited | Construction | 2020 |
| Blue House Productions Limited | Information & communication | 2010 |
| Blue Ibis Ltd | Administrative & support | 2016 |
| Blue Intersect Limited | Wholesale & retail | 2025 |
| Blue Iris Realty Ltd | Real estate | 2022 |
| Blue Jeans Ltd | Wholesale & retail | 2020 |
| Blue Key Estates Ltd | Real estate | 2024 |
| Blue Kite Software Ltd | Information & communication | 2024 |
| Blue Lake Estates Ltd | Real estate | 2023 |
| Blue Lake Restaurant Limited | Hospitality | 2025 |
| Blue Land Manchester Ltd | Construction | 2025 |
| Blue Lemonade Games Ltd | Information & communication | 2023 |
| Blue Light Electrical Ltd | Construction | 2024 |
| Blue Line Containers Ltd. | Transport & logistics | 2018 |
| Blue Line Protection Ltd | Administrative & support | 2026 |
| Blue Linen Company Ltd | Other services | 2023 |
| Blue Linen Company Yorkshire Limited | Other services | 2025 |
| Blue Logic (Holdings) Limited | Information & communication | 2016 |
| Blue Lounge Group Ltd | Other services | 2022 |
| Blue Luggage PVT Ltd | Wholesale & retail | 2025 |
| Blue Marble Homes Ltd | Real estate | 2026 |
| Blue Marble Property Fund 1 LP | | 2018 |
| Blue Marble Waste Disposal Limited | Water & waste | 2025 |
| Blue Mart Limited | Wholesale & retail | 2025 |
| Blue Masque Limited | Arts & recreation | 2008 |
| Blue Maze Limited | Hospitality | 2002 |
| Blue Moon Apparel Ltd | Wholesale & retail | 2024 |
| Blue Moon Construction Ltd | Construction | 2024 |
| Blue Moon Entertainment Ltd | Arts & recreation | 2017 |
| Blue Moon Telecom Ltd | Wholesale & retail | 2011 |
| Blue Moss Rentals Limited | Real estate | 2021 |
| Blue Mountain Marketing Ltd | Information & communication | 2023 |
| Blue Neuron Ltd | Information & communication | 2025 |
| Blue Nile Desserts Limited | Manufacturing | 2025 |
| Blue Nile for Trading Ltd | Wholesale & retail | 2025 |
| Blue Nile Imports Ltd | Wholesale & retail | 2025 |
| Blue North West Property Ltd | Hospitality | 2024 |
| Blue Orchid Heights Ltd | Real estate | 2025 |
| Blue OWL Network Ltd | Information & communication | 2015 |
| Blue Panda Finance Ltd | Administrative & support | 2013 |
| Blue Peak Solutions Ltd | Information & communication | 2019 |
| Blue Plan Design Limited | Manufacturing | 2022 |
| Blue Port Consulting Ltd | Information & communication | 2024 |
| Blue Potato Marketing Ltd | Professional & scientific | 2025 |
| Blue Print Accountancy Group Ltd | Professional & scientific | 2026 |
| Blue Provision Limited | Administrative & support | 2014 |
| Blue Rinse DOT COM Ltd | Arts & recreation | 2017 |
| Blue Rocket Limited | Real estate | 2012 |