| Lesolle Veterinary Services Limited | Professional & scientific | 2012 |
| Lewis Plumbing & Heating Ltd | Construction | 2017 |
| Lifestyle Interiors by Elaine Gore Ltd | Professional & scientific | 2009 |
| Lift Services (Oldham) Limited | Manufacturing | 2011 |
| Light and Imagination Ltd | Professional & scientific | 2016 |
| Lillywhite Facilities Management Ltd | Administrative & support | 2017 |
| Lippe Consultancy Limited | Professional & scientific | 2011 |
| Little Acre Construction Ltd | Construction | 2015 |
| Liverpool Commercial Cleaners Limited | Administrative & support | 2019 |
| Logical Absurdity Limited | Professional & scientific | 2016 |
| Look Cleaning Group Ltd | Administrative & support | 2024 |
| Loric Taverns Ltd | Hospitality | 2018 |
| Lottie's Shoeroom Ltd | Wholesale & retail | 2018 |
| Lounge Room Lizards & Aquatics Limited | Wholesale & retail | 2012 |
| LS Elevators Ltd | Manufacturing | 2016 |
| Lunar Moon Ventures Limited | Arts & recreation | 2022 |
| Lunch Corporation Ltd | Hospitality | 2011 |
| Luncheonette Limited | Hospitality | 2016 |
| Lynne Helliwell Health and Well Being Ltd | Health & social care | 2018 |
| M.R. Entertainment Ltd. | Information & communication | 2015 |
| Marc Rufus (Electrical) Ltd. | Construction | 2016 |
| Marsh Estate Planning Ltd | Administrative & support | 2019 |
| MC Rigging & Lifting Ltd | Construction | 2020 |
| Mcaulay Enterprises Limited | Administrative & support | 2012 |
| ME'N'U1 Ltd | Hospitality | 2015 |
| Meerkat Marquees Limited | Administrative & support | 2016 |
| MEG Training Solutions Ltd | Education | 2014 |
| Mentivity C.I.C. | Education | 2018 |
| Merchants House Limited | Hospitality | 2016 |
| Midland Electrical & Data Ltd | Construction | 2017 |
| Milestone SW Ltd | Construction | 2015 |
| Millard Homes and Gardens Ltd. | Professional & scientific | 2023 |
| Mister Shifter UK Limited | Transport & logistics | 2009 |
| Mixedup Drinks Ltd | Manufacturing | 2019 |
| Mja-Group Limited | Professional & scientific | 2016 |
| MJF Technology Ltd | Information & communication | 2013 |
| MN Cargo Limited | Wholesale & retail | 2011 |
| Moco Maintenance Ltd | Administrative & support | 2022 |
| Moorbars Ltd | Hospitality | 2014 |
| MPM Fire & Electrical Limited | Construction | 2003 |
| MR. Gman Services Ltd | Construction | 2021 |
| Mrspetite Limited | Professional & scientific | 2021 |
| MST Fitness Ltd | Arts & recreation | 2016 |
| MTW Quality Inspections Ltd | Professional & scientific | 2014 |
| MUG for Life Ltd | Professional & scientific | 2009 |
| Murray & Jones Electrical Contractors Ltd | Manufacturing | 2013 |
| MV App Holdings Limited | Information & communication | 2017 |
| MV App Limited | Information & communication | 2016 |
| Nak'D Kitchen Ltd | Hospitality | 2022 |
| National Advisor Ltd | Professional & scientific | 2018 |
| Natural Stone Fireplaces Limited | Wholesale & retail | 2010 |
| Natural Yorkstone Supplies Ltd | Manufacturing | 2016 |
| Neqtiq Stores Ltd | Wholesale & retail | 2009 |
| NET2PRINT Ltd | Manufacturing | 2018 |
| New Forest Fires Ltd | Construction | 2021 |
| New Forest Trades Ltd | Construction | 2016 |
| Newgen Electrical Services Ltd | Construction | 2015 |
| Newton Pearl Ltd | Professional & scientific | 2016 |
| Next Day Mezzanine Ltd | Manufacturing | 2020 |
| NL Air Conditioning Ltd | Construction | 2019 |
| Nlcc Ltd | Administrative & support | 2023 |
| Noon Sun Media Limited | Health & social care | 2017 |
| Norfolk Fire Solutions Ltd | Administrative & support | 2023 |
| Northcote Property Services Limited | Construction | 2024 |
| Northern Restaurants (North West) Limited | Hospitality | 2016 |
| Northumbria Loft Conversions & Builders Ltd | Construction | 2014 |
| Nosh Infusions London Limited | Other services | 2013 |
| Nottingham Ford Dismantlers Limited | Wholesale & retail | 2006 |
| NTC Civils Limited | Construction | 2019 |
| Oasis Facilities Management Ltd | Professional & scientific | 2019 |
| Oceans Kitchens and Bathrooms Ltd | Wholesale & retail | 2016 |
| Ohana Group Ltd | Construction | 2017 |
| OJ Walters Ltd | Manufacturing | 2017 |
| Olive & Twist (Old Town Street) Ltd | Hospitality | 2023 |
| Olive & Twist Ltd | Hospitality | 2022 |
| OMG Media Ltd | Information & communication | 2013 |
| Omnibus Solutions Limited | Information & communication | 1998 |
| One Northern Construction Ltd | Construction | 2023 |
| Orbital Logistics Ltd | Transport & logistics | 2021 |
| Original Jerk Bites Ltd | Hospitality | 2020 |
| Orillo Films Ltd | Information & communication | 2014 |
| Orsborn-Smith Consultants Limited | Construction | 2014 |
| Oscarmax Limited | Financial services | 2013 |
| OUR Game Limited | Other services | 2011 |
| Outashade Ltd | Construction | 2021 |
| OXF Ltd | Professional & scientific | 2020 |
| P J Bartlett Construction Limited | Construction | 2012 |
| P.B.C Landscapes Limited | Administrative & support | 2017 |
| Paddock Motorcycles Ltd | Wholesale & retail | 2018 |
| Painting by Light Limited | Other services | 2014 |
| Palb Catering Ltd | Hospitality | 2018 |
| Pamplewolf Ltd | Professional & scientific | 2020 |
| PAR Contractors Limited | Agriculture & fishing | 1990 |
| Park Realty Group Limited | Manufacturing | 2021 |
| Parkertron Limited | Information & communication | 2009 |
| Parkhill Health Estates Limited | Other services | 2015 |
| Parsenet Limited | Professional & scientific | 2020 |
| Pds-Hamiltons Limited | Manufacturing | 2003 |
| Peach Cafe Ltd. | Hospitality | 2016 |
| Peakman Services Limited | Construction | 2017 |