| Bcvs Services Limited | Professional & scientific | 2018 |
| Bcvs Trading Limited | Administrative & support | 2018 |
| Bdenyss Ltd | Transport & logistics | 2024 |
| BDR 08 Ltd | Transport & logistics | 2023 |
| BDS (Northern) Limited | Administrative & support | 2007 |
| BDS Care and Support Services Ltd | Administrative & support | 2010 |
| BDT Plumbing and Heating Limited | Construction | 2017 |
| BE Cleanz Ltd | Administrative & support | 2025 |
| BE Engineering Services Ltd | Manufacturing | 2021 |
| BE OUR Guest Yorkshire Ltd | Hospitality | 2023 |
| BE the Best YOU Wellness & Laser Ltd | Health & social care | 2026 |
| Be-Secure Ltd | Administrative & support | 2020 |
| Beacasp Wholesale Limited | Wholesale & retail | 2025 |
| Beacom Limited | Construction | 2018 |
| Beagle Beers Ltd | Hospitality | 2018 |
| Bear Skin Aesthetics Limited | Other services | 2024 |
| Bears Street Food Limited | Hospitality | 2018 |
| Beasley Property Developments Ltd | Construction | 2023 |
| Beastbodysupplements Ltd | Wholesale & retail | 2020 |
| Beatie Enterprises Limited | Wholesale & retail | 2024 |
| Beatthetouts Limited | Professional & scientific | 2009 |
| Beauty Brands Connector Ltd | Professional & scientific | 2022 |
| Beauty by Rebekka at Indulgence Limited | Other services | 2023 |
| Beauté Academy & Training Limited | Other services | 2025 |
| Beck's Collects Ltd | Wholesale & retail | 2024 |
| Beckett Group Ltd | Real estate | 2023 |
| Beckett Prestige Developments Limited | Construction | 2024 |
| Beckett Rentals Limited | Real estate | 2021 |
| Beckham and Burrell Ltd | Wholesale & retail | 2016 |
| Becsco Limited | Wholesale & retail | 1999 |
| Bednarz Lukasz 81566 Limited | Transport & logistics | 2014 |
| Bedstuy Ltd | Information & communication | 2018 |
| Beecroft & Price Properties Limited | Construction | 2005 |
| Beecroft Estates Limited | Real estate | 2009 |
| Beecroft Hotels Limited | Hospitality | 2019 |
| Beedan Scaffolding Solutions Limited | Construction | 2013 |
| Beeez Limited | Wholesale & retail | 2025 |
| Bees Entertainment & Investments Ltd | Professional & scientific | 2023 |
| Beespoke Mortgages Ltd | Financial services | 2021 |
| Believe IT School of Perfoming Arts Limited | Arts & recreation | 2019 |
| Believe IT School of Performing Arts (Ealing) Limited | Arts & recreation | 2019 |
| Belinda T Care Ltd | Health & social care | 2019 |
| Bell & Wood Heritage Clothing Limited | Wholesale & retail | 2015 |
| Bell Development Company Limited | Construction | 1994 |
| Bella Refreshments Ltd. | Wholesale & retail | 2014 |
| Bella Roma (Wakefield) Limited | Hospitality | 2012 |
| Bellamy Developments Ltd | Construction | 2024 |
| Bellap Care Services Ltd | Health & social care | 2023 |
| Belrose (Yorkshire) Limited | Manufacturing | 2023 |
| Belz Healthcare Ltd | Other services | 2016 |
| Belzcare Support Ltd | Real estate | 2022 |
| BEM Electrical Services Ltd | Construction | 2014 |
| BEN Bailey Homes Ltd | Construction | 2011 |
| Bence Lane Development Company Limited | Real estate | 1964 |
| Benedict Manor Management Company Limited | Real estate | 2003 |
| Benella Associates Ltd | Professional & scientific | 2021 |
| Benevest Limited | Financial services | 2024 |
| Bengal Essence Limited | Hospitality | 2025 |
| Bengal Restaurant Limited | Hospitality | 2023 |
| Bengal Spice Hoyland Limited | Hospitality | 2025 |
| Benjamin Squires Limited | Arts & recreation | 2018 |
| Bennett & SON Brass Ltd | Wholesale & retail | 2024 |
| Benny OMO EDO Homes Ltd | Real estate | 2025 |
| Benridge Property Limited | Real estate | 2023 |
| Bens Autos Performance Specialist Limited | Wholesale & retail | 2023 |
| Bens Body Transformation (BBT) Ltd | Other services | 2025 |
| Benson Heating & Plumbing Ltd | Construction | 2026 |
| Bentley Electrical Services Limited | Construction | 2015 |
| Benz Exclusions Ltd | Wholesale & retail | 2025 |
| Berneslai Homes Limited | Real estate | 2002 |
| Berry Hill Park (Mansfield) Phase 1 Property Management Company Limited | Households | 2001 |
| Berry Hill Park (Mansfield) Phase II Property Management Company Limited | Professional & scientific | 2003 |
| Berry Hill Park Phase III Management Limited | Real estate | 2004 |
| Bertram Wood Developments Ltd | Real estate | 2017 |
| Besmart Plastics Ltd | Water & waste | 2025 |
| Bespoke Aluminium Doors Ltd | Manufacturing | 2022 |
| Bespoke Business Growth Ltd | Professional & scientific | 2025 |
| Bespoke Care and Support Ltd | Health & social care | 2020 |
| Bespoke Eco Building Solutions Limited | Construction | 2023 |
| Bespoke Education Limited | Administrative & support | 2017 |
| Bespoke Engagement Education CIC | Education | 2022 |
| Bespoke Enhancements Ltd | Construction | 2025 |
| Bespoke Group Service Ltd | Manufacturing | 2021 |
| Bespoke Improvements Ltd. | Construction | 2008 |
| Bespoke Plumbing & GAS Limited | Construction | 2008 |
| Bespoke Transport Services Ltd | Transport & logistics | 2025 |
| Bespoke Water Solutions Ltd | Wholesale & retail | 2024 |
| Bespoke Yorkshire Investments Limited | Real estate | 2025 |
| Best Barber (Cudworth) Limited | Other services | 2022 |
| Best Behaviour K9 (Barnsley) Limited | Other services | 2019 |
| Best Cutz Barber Salon Ltd | Other services | 2023 |
| Best European Ltd | Wholesale & retail | 2018 |
| Best in Show Ltd | Information & communication | 2012 |
| Best Jeans Ltd | Wholesale & retail | 2017 |
| Best Properties Estates Ltd | Real estate | 2017 |
| Bestow Trad in Ltd | Wholesale & retail | 2026 |
| Beth’S Corner Kitchen Ltd | Hospitality | 2026 |
| Betson Enterprise Ltd | Wholesale & retail | 2023 |
| Betta Contracts Ltd | Construction | 2024 |
| Betta Windows Ltd | Construction | 2016 |