| 1812 Investors Limited | Wholesale & retail | 2005 |
| 1RULE Consulting Ltd | Other services | 2021 |
| 1ST Call Properties (Cleethorpes) Limited | Real estate | 2020 |
| 25 Knoll Street Management Limited | Households | 2022 |
| 3 Together Properties Ltd | Real estate | 2025 |
| 360 Interiors Limited | Manufacturing | 2014 |
| 444 Beauty Limited | Other services | 2024 |
| 4K Fadez Cleethorpes Ltd | Other services | 2025 |
| 50 Second Avenue Ltd | Real estate | 2025 |
| 535ID Ltd | Wholesale & retail | 2025 |
| 7 Dover Street Ltd | Real estate | 2025 |
| 89 Sets Ltd | Wholesale & retail | 2025 |
| A & F Building & Roofing Services Limited | Construction | 2007 |
| A & L Stone Ltd | Hospitality | 2024 |
| A a Radio Cars Limited | Transport & logistics | 1999 |
| A a Wind Services Ltd. | Construction | 2017 |
| A and D Electrical Services Limited | Construction | 2003 |
| A M Vehicle Sales Limited | Wholesale & retail | 2016 |
| A T Mcmahon Property Management ( Lincs.) Ltd | Households | 2022 |
| A Wood Site Services Limited | Construction | 2022 |
| A-Z Property Management Services Ltd | Real estate | 2026 |
| A.F. Commercials Limited | Wholesale & retail | 1982 |
| A.S.K Fisher Plumbing & Heating Ltd | Construction | 2023 |
| Abacus Appliance Repairs Grimsby & Cleethorpes Ltd | Other services | 2021 |
| Abilash & Co Foods Ltd | Hospitality | 2026 |
| Abilash & Co Holdings Ltd | Financial services | 2026 |
| Abilash & Co Properties Ltd | Construction | 2025 |
| Abode Gifts Limited | Wholesale & retail | 2012 |
| Absolute Community Ltd | Other services | 2017 |
| AC Cost Consultancy Ltd | Professional & scientific | 2021 |
| AC Importers Limited | Wholesale & retail | 2015 |
| Acer Tree & Vegetation Ltd | Administrative & support | 2024 |
| ACH Collective Ltd | Wholesale & retail | 2026 |
| Acmb Services Limited | Extraterritorial | 2014 |
| AD Family Estates Ltd | Real estate | 2026 |
| Adam Fulton Architecture Ltd | Professional & scientific | 2026 |
| Adata Services Ltd. | Information & communication | 2017 |
| Adsu Art Service Ltd. | Arts & recreation | 2012 |
| Affinity Partnerships Limited | Administrative & support | 2002 |
| Affinity Solutions Ltd | Extraterritorial | 2017 |
| Affordable Cars Grimsby Limited | Wholesale & retail | 2023 |
| Affordable Roofing Ltd | Construction | 2023 |
| AG Property (GY) Ltd | Real estate | 2021 |
| Agrah Cleethorpes Limited | Hospitality | 2022 |
| AI Love ME Limited | Wholesale & retail | 2016 |
| AIRS9 Ltd | Construction | 2026 |
| AJ Furnish Ltd | Other services | 2025 |
| AJ Holiday Lets Ltd | Hospitality | 2022 |
| Ajaya Eagle Ltd | Professional & scientific | 2021 |
| AJE Engineering Services Ltd | Professional & scientific | 2022 |
| AJM Ventus Limited | Construction | 2019 |
| Ajme Limited | Manufacturing | 2014 |
| AKM Industrials Limited | Administrative & support | 2026 |
| AL Accommodation Ltd | Hospitality | 2022 |
| Alam Tandoori Ltd | Hospitality | 2021 |
| Albenellie Property Ltd | Real estate | 2026 |
| Alberstone Consultancy Limited | Education | 2026 |
| Albertnicolatrans Ltd | Transport & logistics | 2023 |
| Alex Wood Contracting Limited | Other services | 2007 |
| ALF Oliver Ltd | Hospitality | 2018 |
| ALL Home Property Developments Ltd | Construction | 2023 |
| Allenby & Todd Limited | Financial services | 2015 |
| Alltype Hose Ltd | Energy | 2025 |
| Alpha One Rescue Limited | Administrative & support | 2024 |
| Alpha Plumbing Ltd | Construction | 2024 |
| Amarant Design Ltd | Professional & scientific | 2023 |
| AMJ Business Solutions Ltd | Professional & scientific | 2018 |
| Amore Cleethorpes Limited | Hospitality | 2025 |
| Amour Love of Hair Limited | Other services | 2005 |
| ANA Fish Services Limited | Professional & scientific | 2024 |
| Andersons Furniture Ltd | Wholesale & retail | 2025 |
| Andrew Sims Bespoke Kitchens & Wardrobes Ltd | Manufacturing | 2017 |
| Andthoms Limited | Construction | 2023 |
| Andy's Auto Services Limited | Manufacturing | 2004 |
| Angeldean Enterprises Limited | Wholesale & retail | 2022 |
| Anghelos Drive Ltd | Transport & logistics | 2025 |
| Angus Finlayson Transport Ltd | Transport & logistics | 2013 |
| Anida Limited | Administrative & support | 2007 |
| Another Planet Commercial Property Limited | Real estate | 2025 |
| Another Planet Properties Ltd | Real estate | 2023 |
| Antalya Grill Clee Ltd | Hospitality | 2025 |
| Antipasti Ltd | Wholesale & retail | 2025 |
| Anvil Inns (Lastingham) Limited | Extraterritorial | 2007 |
| Apex Engineering Services (Grimsby) Limited | Manufacturing | 2003 |
| Apex Motoring Group Limited | Transport & logistics | 2024 |
| Apex Property Renovations Limited | Construction | 2026 |
| Apex Service Management Limited | Professional & scientific | 2026 |
| Apex Serviced Accommodation Ltd | Construction | 2021 |
| Apollo Physique Ltd | Wholesale & retail | 2017 |
| Apro Consulting Ltd | Professional & scientific | 2025 |
| Aqualine Bathrooms Cleethorpes Ltd | Wholesale & retail | 2016 |
| Aquaseal Services Limited | Construction | 2025 |
| Arctic Donkeys Ltd. | Professional & scientific | 2014 |
| Argyle Estate Agents & Financial Services Limited | Real estate | 2002 |
| Arty Beanz Community Interest Company | Arts & recreation | 2024 |
| AS Elec Limited | Construction | 2026 |
| AS Electrical Contractors Ltd | Construction | 2026 |
| AS Plant Limited | Construction | 2008 |
| AS Plumbing and Renewable Services Ltd | Construction | 2025 |
| Askerton Developments (Grimsby) Limited | Construction | 2025 |