| Kaleidoscope Consultancy Ltd | Professional & scientific | 2019 |
| KE Fibertec UK Limited | Manufacturing | 2001 |
| Kemp Builders (Gosport) Ltd | Construction | 2019 |
| Keyaankush Ltd | Hospitality | 2020 |
| Kipson Farm Project Ltd | Construction | 2025 |
| Kirtland Ltd | Real estate | 2018 |
| KMK Pinoy Oriental Ltd | Wholesale & retail | 2021 |
| KSP Consultancy LLP | | 2006 |
| Laneway Coffee Ltd | Hospitality | 2014 |
| Last LEE Ltd | Hospitality | 2026 |
| Lavender and Wight Limited | Real estate | 1999 |
| LEE Tandoori Limited | Hospitality | 2018 |
| Lee-On-The-Solent Florist Ltd | Wholesale & retail | 2021 |
| Lee-On-The-Solent Tennis Squash and Fitness Club Limited | Arts & recreation | 2026 |
| Leeslane Property Management RTM Company Limited | Households | 2009 |
| LEGACY25 Ltd | Wholesale & retail | 2026 |
| LGY Investments Limited | Construction | 2023 |
| Limburn Boiler & Heating Holdings Limited | Financial services | 2011 |
| Limburn Boiler & Heating Services Limited | Construction | 2001 |
| Limburn Group Holdings Limited | Financial services | 2022 |
| Limburn Group Trustees Limited | Professional & scientific | 2022 |
| Lios Bikes Ltd | Manufacturing | 2012 |
| Liquilabs Limited | Wholesale & retail | 2025 |
| LJ58 Ltd | Hospitality | 2023 |
| Lloyd Richard Photography Ltd | Professional & scientific | 2018 |
| Lowndes & Co Limited | Professional & scientific | 2010 |
| LRT Cards Ltd | Wholesale & retail | 2025 |
| Lucky 88 Ltd | Hospitality | 2018 |
| Luke Wilson Training Limited | Other services | 2017 |
| Major Services NOW Ltd | Construction | 2025 |
| Malum (Southern) Pest & Bird Control Ltd | Administrative & support | 2020 |
| Marest and Co Limited | Health & social care | 2019 |
| Marine Management Support Limited | Administrative & support | 2010 |
| Mark One Property Solutions Limited | Real estate | 2018 |
| Martin Good Auto Repairs Ltd | Wholesale & retail | 2021 |
| Martin RAY Limited | Construction | 2014 |
| Matthews Construction Limited | Construction | 2025 |
| MBG D Limited | Wholesale & retail | 2026 |
| MBS Technical Services Ltd | Manufacturing | 2025 |
| Medina Court Residents Company Limited | Households | 1975 |
| Melport Electrical Ltd | Construction | 2021 |
| Melport Ltd | Real estate | 2024 |
| Melport Property Ltd | Real estate | 2025 |
| Merifield Solutions Ltd | Construction | 2023 |
| MIG Marketing Ltd | Professional & scientific | 2020 |
| MIJ Properties Limited | Real estate | 2025 |
| Mikz Ltd | Manufacturing | 2017 |
| Milvil Court RTM Company Ltd | Households | 2019 |
| Mimics Productions Ltd | Manufacturing | 2003 |
| Mind the GAP Well-Being Limited | Other services | 2016 |
| Mission Morzine Limited | Other services | 2024 |
| Mission Performance Limited | Administrative & support | 2001 |
| Motor Buying Cleaning Limited | Wholesale & retail | 2026 |
| Motor Buying Group Holdings Ltd | Extraterritorial | 2026 |
| Motor Buying Group Ltd | Wholesale & retail | 2021 |
| Motor Buying Transport Limited | Transport & logistics | 2026 |
| Mowbos Limited | Professional & scientific | 2020 |
| MPO Cleaning Services Ltd | Administrative & support | 2026 |
| Mr&Mrsbathrooms Limited | Wholesale & retail | 2019 |
| MR. Litework (U.K.) Ltd | Construction | 2003 |
| Mypool Limited | Arts & recreation | 2005 |
| Neece Services Ltd | Wholesale & retail | 2021 |
| Neogen Limited | Real estate | 2020 |
| New House Lettings Ltd | Construction | 2019 |
| Nila Soru Limited | Hospitality | 2024 |
| Noggin Ltd | Information & communication | 2007 |
| Optionplace Limited | Households | 1991 |
| Orleys Mechanical Services Ltd | Wholesale & retail | 2019 |
| Outdoor Lights Ltd | Wholesale & retail | 2025 |
| Outright Games Limited | Information & communication | 2016 |
| Oyster Court Limited | Hospitality | 1998 |
| Pamela Davies and Associates Limited | Administrative & support | 2016 |
| Panasia Global UK Limited | Real estate | 2017 |
| Pankhurst Gallery Ltd | Arts & recreation | 2018 |
| Parcar Limited | Construction | 2005 |
| Parker Media Ltd | Information & communication | 2023 |
| Particle Projects Limited | Extraterritorial | 2022 |
| Passford Holdings Limited | Information & communication | 2010 |
| Passford Investments Limited | Extraterritorial | 2018 |
| Passford Limited | Extraterritorial | 2010 |
| Passford Properties Limited | Extraterritorial | 1999 |
| Pebble Beach (Lee-On-The-Solent) Management Limited | Extraterritorial | 2014 |
| Penny Dimmick Associates Limited | Financial services | 2019 |
| PH Investments 2012 Limited | Real estate | 2015 |
| Phoenix Cleaning Contracts Limited | Other services | 2009 |
| Pink Property Management Limited | Real estate | 2016 |
| Plan Safety Ltd | Other services | 2015 |
| Plum Architects Limited | Professional & scientific | 2010 |
| Power Marketing (UK) Limited | Administrative & support | 2006 |
| Pragmatic Power Solutions Ltd. | Construction | 2019 |
| Promenade Court Residents Company Limited | Households | 1979 |
| Promultis Ltd | Wholesale & retail | 2003 |
| Property Address Ltd | Administrative & support | 2015 |
| Property Eighty 8 Ltd | Real estate | 2022 |
| Proptech Aero Ltd | Manufacturing | 2008 |
| Psion Vision Ltd | Professional & scientific | 2008 |
| R-Cubed Technologies Ltd | Manufacturing | 2017 |
| Raimora Ltd | Wholesale & retail | 2023 |
| Rate Hunt Limited | Transport & logistics | 2026 |
| RAY Edwards Logistics Ltd | Transport & logistics | 2026 |