| Bannerman Signs Limited | Bradford | 2024 |
| Bannermans Catering Ltd | Hoddesdon | 2018 |
| Bannerpark Limited | Smethwick | 1987 |
| Banners and Beyond Ltd | Bodmin | 2025 |
| Banners Lane Engineering Company Limited | West Midlands | 1967 |
| Banners Printing Ltd | Leicester | 2024 |
| Banners Village Ltd | Ilford | 2022 |
| Bannersinc Ltd | Manchester | 2019 |
| Bannisteel Limited | Cradley Heath | 2005 |
| Bannister Branding Ltd | Chelmsford | 2023 |
| Bannisters Limited | Sowerby Bridge | 2026 |
| Bannisters Print and Installation Ltd | Tiptree | 2023 |
| Bannocks (Tigre) Marble Company Limited | West Midlands | 1946 |
| Bannsaw Ltd | Craigavon | 2021 |
| Bannview Studios Limited | Ballymena | 2022 |
| Bano Glow Ltd | Leeds | 2025 |
| Bano Merchandising Ltd | London | 2015 |
| Bano Recycling UK Limited | Bridgend | 2013 |
| Bano Services Limited | Nelson | 2018 |
| Banoffee Capital Ltd | Lingfield | 2021 |
| Banoful Sweet House Limited | Manchester | 2015 |
| Banoful Sweet Hyde Limited | Hyde | 2023 |
| Banoful Sweet Rochdale Limited | Manchester | 2026 |
| Banook Ltd | London | 2023 |
| Banshee Bricks Ltd | Broxbourne | 2024 |
| Banstead Garage Doors and Gates Limited | Ashford | 2024 |
| Banstead Kitchen Studio Limited | Oldham | 2015 |
| Bantboru UK Ltd | London | 2022 |
| Bantech Ltd. | Newton Stewart | 2013 |
| Bantex Limited | Bury St. Edmunds | 2003 |
| Banton Company Limited | Oakthorpe | 2025 |
| Banton Frameworks Limited | Glasgow | 2016 |
| Banton's Buttons Ltd | Ware | 2018 |
| Bantos Group Ltd | London | 2015 |
| Bantou Foods Limited | South Woodham Ferrers | 2020 |
| Bantu Blends Ltd | Oldham | 2026 |
| Bantu Notts CIC | Nottingham | 2025 |
| Bantuway Limited | London | 1996 |
| Banu Rose Ltd | Ware | 2017 |
| Banulla Bespoke Ltd | Hornchurch | 2023 |
| Banwar Ltd | Stoke-On-Trent | 2026 |
| Banyi’S Kitchen & Grills Ltd | King'S Lynn | 2025 |
| Banz Limited | Crawley | 2003 |
| Banzai UK Limited | Harrow | 2007 |
| Banzola Technologies Limited | Southam | 2016 |
| Banzone Ltd | London | 2025 |
| BAO Skincare Limited | Pool | 2017 |
| BAO XEN Limited | Liverpool | 2003 |
| Baobab Biotechnology UK Ltd | Potters Bar | 2025 |
| Baobab Engineering Ltd | Buntingford | 2015 |
| Baobab Kitchens Ltd | Rotherham | 2025 |
| Baobab Trading Company Limited | Newdigate | 2014 |
| Baobae Limited | Rayleigh | 2025 |
| Baobean Coffee Ltd | Bedford | 2025 |
| Baobei Limited | Swanley | 2025 |
| Baocheng Technology Limited | Manchester | 2026 |
| Baoding Eternity Import & Export Co., Ltd. | Beckenham | 2023 |
| Baofang Business Ltd | Cambridge | 2023 |
| Baog Designs & Concepts Limited | London | 2021 |
| Baoji Group Limited | Cambridge | 2024 |
| Baoji Titanium Industry Co Limited | Kettering | 2025 |
| Baoshine Ltd | London | 2025 |
| Baot Ltd | London | 2018 |
| Baotuo (Tianjin) Steel Group Co., Ltd | Gillingham | 2023 |
| Baoxiong LI Ltd | Cardiff | 2021 |
| BAP Engineering Limited | Fareham | 2012 |
| Bapp Group Limited | Barnsley | 1992 |
| Bapp Industrial Supplies (Doncaster) Limited | Doncaster | 1989 |
| Bapp Industrial Supplies (Leeds) Limited | Leeds | 2014 |
| Bapp Industrial Supplies (Mansfield) Limited | Kirkby-In-Ashfield | 1990 |
| Bapp Industrial Supplies (West Midlands) Limited | West Bromwich | 2016 |
| Bapp Industrial Supplies Limited | Barnsley | 1972 |
| Bappz Limited | London | 2009 |
| Baptistryuk Ltd | Llanfyllin | 2011 |
| Baptt Shopfitters Limited | Sheffield | 1994 |
| Baptt Subcontracting Ltd | Ruislip, | 2025 |
| Bar Best Appliance Repair Ltd | Thornton Heath | 2026 |
| Bar Buoy Ltd | Exmouth | 2021 |
| Bar Graphic Machinery Limited | Addlestone | 2004 |
| Bar JAK Ltd | Radstock | 2023 |
| Bar Jewellery Ltd | Leighton Buzzard | 2015 |
| Bar Knight Precision Engineers Limited | Glasgow | 2007 |
| Bar O2 Limited | Stoke On Trent | 2001 |
| Bar Pro Events Ltd | Pontypridd | 2022 |
| Bar Products & Services Limited | Brighouse | 1995 |
| Bar Propshafts Ltd | Neath | 2025 |
| Bar Refrigeration Ltd | Kirkcaldy | 2007 |
| Bar Specialists Ltd | London | 2009 |
| Bar Welding and Fabrication Ltd | Morpeth | 2025 |
| Bar-Tek Acoustics Limited | Aberdeen | 2017 |
| BAR1 Brands Limited | Ormskirk | 2022 |
| Bar:Suds Limited | Epping | 2020 |
| Bara Menyn CYF | Swansea | 2025 |
| Barair Systems Limited | Bradford | 2003 |
| Barakah Beards Ltd | Manchester | 2025 |
| Barakah Electrical Ltd | Birmingham | 2025 |
| Barakat Al-Madina Ltd | Bradford | 2016 |
| Barakat Clothing Ltd | Solihull | 2025 |
| Barakat Packaging UK Ltd | London | 2026 |
| Barakat Services Limited | London | 2019 |