| Bang Bang BAO Ltd | Hospitality | 2024 |
| Bangkok Chinatown Limited | Hospitality | 2024 |
| Bangla Bazaar Leeds Ltd | Wholesale & retail | 2019 |
| Bangla Mart Ltd | Wholesale & retail | 2023 |
| Bangla Town Leeds Ltd | Wholesale & retail | 2024 |
| Bangladesh Centre Leeds | Health & social care | 2010 |
| Bangly Partners LLP | | 2024 |
| Bango Cares Ltd | Health & social care | 2021 |
| Bangreela Enterprises Limited | Hospitality | 2021 |
| Banhmi the Crust Heaven Limited | Hospitality | 2025 |
| Banhmi Today Limited | Hospitality | 2023 |
| Bani B Ltd | Real estate | 2024 |
| Banjul Healthcare Ltd | Health & social care | 2024 |
| Bank View Management Company Limited | Households | 2003 |
| Bankers Life Securities Limited | Real estate | 2007 |
| Bankfield Heath Solicitors Ltd | Professional & scientific | 2012 |
| Bankish UK Limited | Information & communication | 2022 |
| Bankrupt Beds Limited | Wholesale & retail | 1998 |
| Bankrupt Store Ltd | Wholesale & retail | 2020 |
| Banks Lane Investments Limited | Real estate | 1997 |
| Bankside Coffee Rubiaceae Limited | Manufacturing | 2026 |
| Bannon Group Projects Limited | Construction | 2019 |
| Bano Glow Ltd | Manufacturing | 2025 |
| Banora Ltd | Wholesale & retail | 2025 |
| Bano’S Afghan Kitchen Ltd | Hospitality | 2025 |
| Banpyne Limited | Real estate | 1977 |
| Bansal and Daughter Limited | Real estate | 2025 |
| Bansal Projects Limited | Construction | 2026 |
| Bansari Ltd | Wholesale & retail | 2025 |
| Banter Ltd | Information & communication | 2018 |
| Banter Spirit Ltd | Other services | 2022 |
| Bantry Medical Ltd | Health & social care | 2012 |
| Baobab Logix Ltd | Information & communication | 2024 |
| Baopoly Limited | Education | 2015 |
| Bapi & Avani Property Ltd | Real estate | 2025 |
| Bapp Industrial Supplies (Castleford) Limited | Wholesale & retail | 1978 |
| Bapp Industrial Supplies (Leeds) Limited | Manufacturing | 2014 |
| Bappi Limited | Administrative & support | 2015 |
| Bar 166 Properties Limited | Real estate | 2004 |
| Bar 23 Ltd | Hospitality | 2025 |
| Bar @ 770 Limited | Hospitality | 2023 |
| Bar L Limited | Hospitality | 2019 |
| Bar N Q Limited | Hospitality | 2017 |
| Bar Restaurant Tirana (Birmingham) Ltd | Hospitality | 2020 |
| Bar Staff Limited | Hospitality | 2011 |
| Bar Termini Limited | Hospitality | 2014 |
| Bara Home Solutions Ltd | Construction | 2022 |
| Baracoa Ltd | Hospitality | 2009 |
| Baraka Grill Limited | Hospitality | 2026 |
| Baraka Wholesale and VEG Limited | Wholesale & retail | 2026 |
| Barakaat Limited | Wholesale & retail | 2014 |
| Barakah Halal Meat and Poultry UK Ltd | Hospitality | 2025 |
| Barakah Residences Ltd | Hospitality | 2025 |
| Barakat ALA Barakat Limited | Other services | 2020 |
| Baratheon Limited | Hospitality | 2013 |
| Barazi UK Ltd | Real estate | 2025 |
| Barb Agency Ltd | Professional & scientific | 2021 |
| Barbar Elephants Limited | Hospitality | 2007 |
| Barber AA Limited | Households | 2021 |
| Barber Club Leeds Ltd | Other services | 2025 |
| Barber Club Morley Ltd | Other services | 2024 |
| Barbering Artist Limited | Other services | 2022 |
| Barbican Construction Holdings Limited | Financial services | 2024 |
| Barbican Gate Management Company Limited | Households | 2002 |
| Barbican Management Company (York) Limited | Households | 1996 |
| Barbican Power Limited | Energy | 2013 |
| Barbie Sparkle Sevices Limited | Administrative & support | 2025 |
| Barbos Consulting Ltd | Wholesale & retail | 2016 |
| Barca - Leeds | Health & social care | 1994 |
| Barcares Investments Limited | Financial services | 2023 |
| Barclay Jones Consulting Limited | Information & communication | 2008 |
| Barcodegenie Ltd | Information & communication | 2020 |
| Barden Foods Limited | Financial services | 2021 |
| Barden Grove Investments Limited | Real estate | 2010 |
| Barden Roofing Services (Wakefield) Limited | Construction | 1983 |
| Bardi Ltd | Wholesale & retail | 2024 |
| Bardsey Medical Services Ltd | Health & social care | 2017 |
| Bardsey Roofing & Building Services Ltd | Construction | 2018 |
| Bare ASS Creatives Limited | Arts & recreation | 2024 |
| Bare Brass Band Ltd. | Arts & recreation | 2015 |
| Bare Bricks Ltd | Real estate | 2025 |
| Bare Bricks Property Ltd | Real estate | 2020 |
| Bare Coffee Limited | Wholesale & retail | 2019 |
| Barefoot Business Consulting Ltd | Administrative & support | 2011 |
| Barefoot Health Limited | Health & social care | 2019 |
| Bareham Independent Financial Advisers Limited | Financial services | 2020 |
| Baresi Holdings Ltd | Financial services | 2025 |
| Bareto Ltd | Hospitality | 2022 |
| Barez Confectionery Ltd | Wholesale & retail | 2025 |
| Bargain Auto Centre Ltd | Wholesale & retail | 2011 |
| Bargain Basement (Leeds) Ltd | Wholesale & retail | 2017 |
| Bargain Bonanza Bazaar Limited | Wholesale & retail | 2020 |
| Bargain Stonegate Local Limited | Wholesale & retail | 2023 |
| Bargain Tools Limited | Wholesale & retail | 2011 |
| Bargains and Gifts Ltd | Wholesale & retail | 2018 |
| Barin Bakery Ltd | Wholesale & retail | 2023 |
| Bark and Bite Ltd | Professional & scientific | 2009 |
| Bark Avenue Leeds Ltd | Other services | 2025 |
| Bark N Bite Limited | Agriculture & fishing | 2022 |
| Bark Products Ltd | Manufacturing | 2022 |