| Adpost Media Limited | Professional & scientific | 2003 |
| B.C. Warwick (Dampcourses) Limited | | 1976 |
| Birch Energy Limited | Energy | 1999 |
| Brian Mckitton Joinery Limited | Construction | 2002 |
| Brigg Fried Chicken Ltd | Hospitality | 2019 |
| Britannia Global Services Limited | Wholesale & retail | 2000 |
| Broughton Partners Limited | Agriculture & fishing | 2003 |
| Burning Sensation (Grimsby) Limited | Wholesale & retail | 1988 |
| Burning Sensation Limited | Professional & scientific | 1988 |
| Copes Demolition Ltd | Construction | 2023 |
| D. C. Transport Limited | Information & communication | 1990 |
| Darran Clark Haulage Limited | Transport & logistics | 2003 |
| Dartmajor Limited | | 1982 |
| David Bury (T.V.) Limited | Professional & scientific | 1962 |
| David Bury Limited | Wholesale & retail | 1990 |
| Diamond Dental Care Limited | Health & social care | 2006 |
| Dilsasta Limited | | 1979 |
| Dinecrown Limited | Wholesale & retail | 1992 |
| Drainmaster (UK) Ltd | Administrative & support | 1999 |
| Driver for Hire Ltd | Construction | 2022 |
| Earth Bound Misfits Ltd. | Arts & recreation | 1997 |
| Eddie's Transport Limited | Transport & logistics | 1978 |
| Equity Release Corporation Limited | Professional & scientific | 1988 |
| Evison Electrical Limited | | 1978 |
| Firmbarn Limited | Wholesale & retail | 1994 |
| GFP (Grimsby Fish Products) Ltd | Professional & scientific | 1992 |
| Goodwins of Lincolnshire Limited | Transport & logistics | 1977 |
| Grainthorpe Estate Limited | Arts & recreation | 1963 |
| Grimsby Fish Meal Company | Professional & scientific | 1975 |
| H.N. Slingsby Limited | Wholesale & retail | 1966 |
| H.S. Wilkinson & SON (Keelby) Limited | Wholesale & retail | 1961 |
| Humberside Enterprises (Civil Engineering) Limited | | 1976 |
| I.S. Installations Limited | Wholesale & retail | 2002 |
| J Hopkinson Painting & Decorating Limited | Other services | 2006 |
| J. W. Haywood Joinery Limited | Construction | 2005 |
| Lumley's Garage Limited | Real estate | 1988 |
| M.J. Button Accountancy Services Limited | Professional & scientific | 2005 |
| Mangher Foods Ltd | Wholesale & retail | 2004 |
| Mark Thompson Developments Limited | Wholesale & retail | 1990 |
| Matos Limited | | 1979 |
| Mindtrans Limited | | 1986 |
| Model Market Limited | Wholesale & retail | 2000 |
| Multisteel (Barton) Limited | | 1978 |
| N.N.S. (Coffee Bars) Limited | Other services | 1972 |
| Nightingale Enterprises Limited | Professional & scientific | 2006 |
| P.J. Preston (Auto Electrical) Limited | Wholesale & retail | 1978 |
| Paul Davies (Cleethorpes) Limited | Wholesale & retail | 2003 |
| Peter Lovesey Limited | Arts & recreation | 1999 |
| Picaway Limited | | 1985 |
| Prosperpark Limited | Information & communication | 1989 |
| Quest Tech Systems Limited | Information & communication | 2006 |
| Quillflag Limited | Wholesale & retail | 1984 |
| R.A. Goodrum Plumbing & Heating Limited | Construction | 1999 |
| Reed & Ruthven Limited | | 1975 |
| Response 24/7 UK Limited | Professional & scientific | 2005 |
| Rightclick Logistics Ltd | Transport & logistics | 2024 |
| Rossyew Limited | Extraterritorial | 2017 |
| Santon Properties Limited | Transport & logistics | 2003 |
| Scunthorpe Specsavers Limited | Wholesale & retail | 1991 |
| Scunthorpe Visionplus Limited | Wholesale & retail | 1998 |
| Shona Shine Limited | Wholesale & retail | 2025 |
| Spraymasters (Grimsby) Limited | Wholesale & retail | 1999 |
| Swift Auto Centre Limited | Wholesale & retail | 1999 |
| THE Deli and Diner Limited | Hospitality | 2002 |
| Turnerwarran Ltd | Professional & scientific | 1999 |
| Turnerwarran Management Services Ltd | Administrative & support | 1999 |
| United Fish Industries (UK) Limited | Extraterritorial | 2017 |
| Victoria Street Business Centre (Company Services) Limited | Professional & scientific | 1996 |
| W.T.E. Thermal Engineering (U.K.) Limited | | 1982 |
| Weelsby Street Grimsby Ltd | Wholesale & retail | 2019 |
| Windmill Kitchens (Lincolnshire) Limited | Manufacturing | 1999 |
| ZR (Computers) Limited | | 1981 |