| Bahar Hand Car WAH Ltd | Wholesale & retail | 2026 |
| Bailey Wright Solutions Limited | Construction | 2014 |
| Baitbox Limited | Wholesale & retail | 2002 |
| Baker Properties (Grimsby) Limited | Real estate | 2019 |
| Bakland Cabins Limited | Manufacturing | 2025 |
| Balaram Limited | Health & social care | 2023 |
| Balcombe Consultancy Ltd | Professional & scientific | 2019 |
| Balcony Arms Limited | Extraterritorial | 2015 |
| Ballard Welding Services Ltd | Professional & scientific | 2022 |
| Balloon-Ilicious Ltd | Wholesale & retail | 2018 |
| Balloonable Events & Decor Ltd | Wholesale & retail | 2025 |
| Balneum Bath Company Ltd | Wholesale & retail | 2024 |
| Bambino MIO Limited | Wholesale & retail | 2024 |
| Banaman Limited | Professional & scientific | 2012 |
| Banana Leaf (Cleethorpes) Ltd | Wholesale & retail | 2016 |
| Bang UK Limited | Information & communication | 2006 |
| Bank House Investment Management Limited | Financial services | 2006 |
| Banks Refrigeration Services Limited | Construction | 1982 |
| Bar 15 Chestergate Ltd | Hospitality | 2019 |
| Bar Fifteen Ltd | Hospitality | 2015 |
| Barbara Mackie Counselling & Co Ltd | Health & social care | 2020 |
| Barbell Industries Ltd | Wholesale & retail | 2024 |
| Barber Jacks Trading Ltd | Other services | 2017 |
| Barbrook Associates Ltd | Professional & scientific | 2019 |
| Barcart Limited | Arts & recreation | 2003 |
| Bare Grills Catering Ltd | Hospitality | 2022 |
| Barford Physiotherapy Limited | Health & social care | 2015 |
| Bargate Developments (Grimsby) Limited | Real estate | 1987 |
| Barista Coffee POD Limited | Hospitality | 2013 |
| Barkers Fish Ltd | Wholesale & retail | 2024 |
| Barking With Style Dog Grooming Ltd | Other services | 2025 |
| Barks and Bubbles Boutique Ltd | Wholesale & retail | 2026 |
| Barlas Brothers Limited | Health & social care | 2020 |
| Barnoldby Developments Limited | Construction | 2017 |
| Bartica Linden Holdings Ltd | Real estate | 2020 |
| Bartley Homes Limited | | 1996 |
| Bartlomiej Wieczorek Ltd | Transport & logistics | 2015 |
| Barton Books (RC Tech) Limited | Wholesale & retail | 2020 |
| BAS Decorating Ltd | Construction | 2019 |
| Base PT Limited | Arts & recreation | 2019 |
| Baselink Care Limited | Health & social care | 2003 |
| Bath and Tile Systems Limited | Wholesale & retail | 2018 |
| Bathboards Ltd | Wholesale & retail | 2019 |
| Batranel Ltd | Transport & logistics | 2020 |
| Bay Tree Beauty Salon Limited | Other services | 2013 |
| Baybol and Sons Ltd | Wholesale & retail | 2024 |
| BB Artwork & Retouch Ltd | Other services | 2011 |
| Bbtfm Ltd | Wholesale & retail | 2015 |
| BC Electric Limited | Construction | 2003 |
| BCA Plumbing Heating GAS Services Ltd | Construction | 2024 |
| BCH Fabrication Limited | Professional & scientific | 2020 |
| BCM Electrical Ltd | Construction | 2021 |
| BD Transport Solutions Ltd | Transport & logistics | 2024 |
| BDE Transport Limited | Transport & logistics | 2018 |
| BDS Trade Ltd | Wholesale & retail | 2023 |
| BE Great Fitness Ltd | Health & social care | 2024 |
| BE House Ltd | Real estate | 2024 |
| BE Safe Pluming & Heating Limited | Construction | 2019 |
| BE Water MF Ltd | Financial services | 2024 |
| Be-Dental Recruitment Ltd | Administrative & support | 2022 |
| Beacholme Holiday Camp Limited | Real estate | 1948 |
| Bean Martin and Associates Limited | Professional & scientific | 2024 |
| Beard and Sabre Ltd. | Manufacturing | 2015 |
| Beauty at Revive Ltd | Other services | 2025 |
| Beauty at the Gate Limited | Other services | 2014 |
| Beckett Contracting Services Limited | Construction | 2014 |
| Beckett Planning Solutions (BPS) Ltd | Information & communication | 2017 |
| Beckett Vehicle Repairs Ltd | Wholesale & retail | 2024 |
| Becklands at New Waltham Management Company Limited | Professional & scientific | 2017 |
| Beckyhealthcare Ltd | Public administration | 2018 |
| Becoming HER Global Ltd | Professional & scientific | 2026 |
| Bectrans Limited | Transport & logistics | 2013 |
| Bedzzz ETC Limited | Wholesale & retail | 2007 |
| Bedzzz of Louth Limited | Wholesale & retail | 2006 |
| BEE Finishes Limited | Construction | 2022 |
| Beech Nuclear Safety Consultants Ltd | Administrative & support | 2023 |
| Beechcroft at Kirton in Lindsey Management Company Limited | Professional & scientific | 2017 |
| Beechfield Court (Grimsby) Limited | Households | 1997 |
| Beef Scaffolding Services Limited | Construction | 2013 |
| Beesafe Fire & Security Holdings Limited | Financial services | 2018 |
| Beeson Plumbing & Heating Limited | Construction | 2009 |
| Begum Spice Fusion Ltd | Hospitality | 2025 |
| BEH Renewables Limited | Professional & scientific | 2025 |
| Bekkr Limited | Households | 2016 |
| Belchev Ltd. | Wholesale & retail | 2015 |
| Belfin Properties Ltd | Real estate | 2022 |
| Belfry Gardens (Grimsby) Limited | Households | 2024 |
| Bell Insurance Brokers Limited | Financial services | 2003 |
| Belle & BEE Grimsby Limited | Manufacturing | 2017 |
| Belle Emporium Fashion Ltd. | Wholesale & retail | 2015 |
| Bells Roofing Ltd | Construction | 2026 |
| Belly Trans Ltd | Transport & logistics | 2023 |
| Belper Travel Limited | Administrative & support | 2003 |
| Belraith Mews Management Co Limited | Real estate | 1996 |
| Belton & Company Limited | Professional & scientific | 2016 |
| Belton Management Services Ltd | Professional & scientific | 2018 |
| BEN Duncan Research Limited | Administrative & support | 2024 |
| BEN Lonsdale Fish Ltd | Wholesale & retail | 2023 |
| Ben's Finest Grimsby Fish Ltd | Wholesale & retail | 2024 |
| Benanas Limited | Real estate | 1996 |