| Mchale Marketing Limited | Professional & scientific | 2004 |
| Mcor Consulting Ltd | Professional & scientific | 2012 |
| Mdsb Fish&Chips Limited | Hospitality | 2022 |
| ME Accommodation Ltd | Real estate | 2023 |
| Mechanical & Electrical Engineering Services Ltd | Construction | 2026 |
| Mercury Tech Ltd | Construction | 2025 |
| Meredith Developments Holdings Limited | Financial services | 2020 |
| Meredith Developments Limited | Real estate | 2015 |
| Metro-Flex Limited | Manufacturing | 1999 |
| MHP Electrical Limited | Construction | 2000 |
| Micratex Limited | Other services | 2018 |
| Mill House (2004) Limited | Construction | 1984 |
| Milnes Capital Holdings Ltd | Financial services | 2025 |
| Milnes Property Holdings Ltd | Construction | 2025 |
| Mirador Media Ltd | Professional & scientific | 2023 |
| Mitchell Leisure Group Limited | Professional & scientific | 2014 |
| Mizmoz Limited | Information & communication | 2014 |
| MJ Services (Lincs) Limited | Construction | 2009 |
| MJ Training & Consulting Ltd | Professional & scientific | 2023 |
| Mjfracing Ltd | Information & communication | 2022 |
| MK Ship Ltd | Hospitality | 2025 |
| MKT Inspection Limited | Professional & scientific | 2007 |
| MM Development Projects Limited | Real estate | 2025 |
| Moody COW (Mells) Ltd | Hospitality | 2019 |
| Moody Mansion Limited | Hospitality | 2025 |
| Moorby House Management Co Limited | Real estate | 2019 |
| MS Caravan Cleaning Services Ltd | Administrative & support | 2024 |
| MSTC2026 Ltd | Real estate | 2026 |
| MUM Plus Limited | Information & communication | 2026 |
| My Holiday Hero Ltd | Information & communication | 2025 |
| My Leisure Home Limited | Real estate | 2020 |
| My Serenity Care Ltd | Health & social care | 2024 |
| My Way Catering Ltd | Wholesale & retail | 2016 |
| N G Electrical Contractors Ltd | Construction | 2016 |
| N. Mitchell Construction Limited | Construction | 2006 |
| Napoli Cafe Ltd | Hospitality | 2026 |
| Nash-Uk Ltd | Transport & logistics | 2019 |
| National Association of International Recruits Ltd | Education | 2024 |
| National MOT Centre Ltd | Wholesale & retail | 2022 |
| National MOT Skegness Ltd | Wholesale & retail | 2025 |
| Natserv Ltd | Information & communication | 2021 |
| Natterjack Creative Limited | Professional & scientific | 2014 |
| Natural Fashion Ltd | Wholesale & retail | 2024 |
| NEACSU86 Ltd | Health & social care | 2026 |
| Neil Dowlman Architecture Limited | Professional & scientific | 2002 |
| Neil Dowlman Holdings Limited | Financial services | 2021 |
| Neil Dowlman Properties Ltd | Real estate | 2016 |
| Nergiz Ltd | Hospitality | 2018 |
| Neurodriveai Ltd | Wholesale & retail | 2025 |
| New Trend Chalet Park Limited | Hospitality | 1999 |
| Newton Newton Flag & Banner Makers Limited | Manufacturing | 2011 |
| NGA Skegness Ltd | Hospitality | 2026 |
| Nick Holmes Limited | Manufacturing | 2000 |
| Nikita 20 Trading Ltd | Wholesale & retail | 2026 |
| NJD Heating and GAS Limited | Manufacturing | 2016 |
| NMC Recovery Ltd | Other services | 2025 |
| NO 10 Barbers Ltd | Other services | 2024 |
| Noblemay Limited | Wholesale & retail | 2023 |
| Noisy Beetle Limited | Manufacturing | 2018 |
| North Parade Bowling Greens CIC | Arts & recreation | 2025 |
| North Shore Golf Club(Skegness)Limited(The) | Hospitality | 1919 |
| Nova Kitchen Limited | Hospitality | 2025 |
| NUMBERPLATES4LESSUK Ltd | Manufacturing | 2025 |
| Nuttall’S Donkeys Ltd | Arts & recreation | 2025 |
| NV Property Management Lincs. Ltd | Real estate | 2020 |
| O'Connors (Lincs) Ltd | Hospitality | 2026 |
| O.R.J’S Cafe Limited | Hospitality | 2025 |
| O.V Lincs Ltd | Wholesale & retail | 2026 |
| Oakwood Building and Property Services Ltd | Construction | 2011 |
| Ocean Hand Car Wash Skegness Ltd | Administrative & support | 2023 |
| Olbison's Carpet Warehouse Ltd | Wholesale & retail | 2014 |
| Old a Management Company Ltd | Real estate | 2020 |
| Old HAT Vintage Guitars Ltd | Wholesale & retail | 2013 |
| Olivia’S Coffee Ltd | Hospitality | 2020 |
| ON the Hook Ltd | Hospitality | 2026 |
| One Pound Shop Ltd | Other services | 2017 |
| Orchard Farm Equestrian Centre Ltd | Arts & recreation | 2004 |
| OUR Spirit World Ltd | Manufacturing | 2012 |
| Oxford Analytical Ltd | Information & communication | 2025 |
| Oxford Family Estates Ltd | Real estate | 2022 |
| P & J Plumbing & Heating (Lincs) Ltd | Construction | 2007 |
| P a Rawlinson Ltd | Wholesale & retail | 2013 |
| Panda China Ingoldmells Ltd | Hospitality | 2025 |
| Panda Golden Palm Ltd | Hospitality | 2026 |
| Panda Leisure (Skegness) Limited | Hospitality | 1992 |
| Pankaj 93 Trading Ltd | Wholesale & retail | 2026 |
| Panther Five Limited | Hospitality | 2024 |
| Paperbag Trading Ltd | Wholesale & retail | 2025 |
| Paperwork (UK) Limited | Professional & scientific | 1996 |
| Paragon PRG Ltd | Arts & recreation | 2023 |
| Paragon Rubber Co. Limited | Wholesale & retail | 1965 |
| Parker Heating Ltd | Construction | 2026 |
| Parkers of Wainfleet Ltd. | Construction | 1970 |
| Parkers of West Bridgford Limited | Hospitality | 2023 |
| Parksync Limited | Information & communication | 2025 |
| Parrott Services Accommodation Limited | Real estate | 2011 |
| Parvin Holdings Ltd | Real estate | 2026 |
| Pass IT on Productions Ltd | Arts & recreation | 2022 |
| Paul G Webster Ltd | Manufacturing | 2024 |
| Pawtable Ltd | Wholesale & retail | 2026 |