| THE Lavells at IAN Henrys Limited | Other services | 2022 |
| THE Library Barbers Ltd | Other services | 2024 |
| THE Lifehouse | Other services | 2011 |
| THE Limes (Winchester) Limited | Households | 2016 |
| THE Lion Hotel Blaenavon Limited | Hospitality | 2010 |
| THE Little Calm Company Limited | Other services | 2019 |
| THE Little House Clearance Company Ltd | Water & waste | 2021 |
| THE Local Index Ltd | Information & communication | 2025 |
| THE Loft Conversion Company (Portsmouth) Limited | Construction | 2003 |
| THE Lord Mayor of Portsmouth's Coronation Homes | Real estate | 1998 |
| THE Lords of Water Limited | Wholesale & retail | 2022 |
| THE Lower Peninsula Barracks Management Company Limited | Households | 2011 |
| THE Madani Academy Portsmouth Ltd | Education | 2012 |
| THE Maker's Guild CIC | Professional & scientific | 2017 |
| THE Mallu Movers Ltd | Transport & logistics | 2026 |
| THE Market IOW Limited | Wholesale & retail | 2016 |
| THE Mart of Wolf Limited | Wholesale & retail | 2026 |
| THE Mary Rose Archaeological Services Ltd | Professional & scientific | 1995 |
| THE Match Advisory Group Limited | Professional & scientific | 2020 |
| THE Maytime Association Limited | Households | 1997 |
| THE Mead Partnership Ltd | Professional & scientific | 2025 |
| THE Meadows Clinic Ltd | Health & social care | 2023 |
| THE Meadows Management (NO.2) Limited | Households | 1990 |
| THE Medic Today Ltd | Education | 2021 |
| THE Membrane Keyboard Company Limited | Manufacturing | 1995 |
| THE Mermaids Group Ltd | Hospitality | 2018 |
| THE Middlecroft RTM Company Ltd | Households | 2019 |
| THE Mill (Chichester) Management Limited | Households | 2014 |
| THE Mmmi Company Limited | Information & communication | 1998 |
| THE Model Shop Portsmouth Ltd | Wholesale & retail | 2021 |
| THE Modern Herbivore Limited | Hospitality | 2019 |
| THE Moment Global Ltd | Information & communication | 2021 |
| THE Motorists Organisation Limited | Administrative & support | 2012 |
| THE Music Business (Dorset) Limited | Administrative & support | 2013 |
| THE Nail Guru Ltd | Other services | 2018 |
| THE Nakatomi Plaza Limited | Real estate | 2021 |
| THE Naval Service Sports Charity | Arts & recreation | 2007 |
| THE Navitas Partnership (Bristol & Bath Energy Surveys) Limited | Administrative & support | 2007 |
| THE Obeya Room (UK) Limited | Information & communication | 2025 |
| THE Old Orchard, Silton Limited | Hospitality | 2024 |
| THE Olive Construction Limited | Construction | 2017 |
| THE Open House Design Company Limited | Manufacturing | 1979 |
| THE Original Flower Stall Limited | Wholesale & retail | 2013 |
| THE Outside Co. Limited | Hospitality | 2026 |
| THE Over Engineers Limited | Professional & scientific | 2020 |
| THE Padded Seat Limited | Information & communication | 2022 |
| THE Parenting Network C.I.C. | Information & communication | 2017 |
| THE Parenting Network IOW CIC | Education | 2025 |
| THE Partnership Foundation | Administrative & support | 2007 |
| THE Personnel Project Limited | Education | 2024 |
| THE Petersfield Gymnastics Club | Arts & recreation | 2019 |
| THE Petite Event Company Ltd | Hospitality | 2020 |
| THE Phoenix (Portsmouth) Ltd | Hospitality | 2023 |
| THE PIE Punks Ltd | Manufacturing | 2025 |
| THE Pilates Effect Limited | Health & social care | 2020 |
| THE Pixie Parlour Ltd | Other services | 2026 |
| THE Pizza House Restaurant Ltd. | Hospitality | 2015 |
| THE Plastering Company Southern Limited | Construction | 2018 |
| THE Play Corner Childcare Ltd | Health & social care | 2024 |
| THE Play Corner Childcare Paulsgrove Ltd | Health & social care | 2025 |
| THE PO3 Takeaway Ltd | Wholesale & retail | 2025 |
| THE Portsmouth Conan Doyle Collection Trust | Arts & recreation | 2009 |
| THE Portsmouth Diocesan Trading Company Limited | Professional & scientific | 1992 |
| THE Portsmouth Handyman Ltd | Water & waste | 2021 |
| THE Portsmouth Magazine Ltd | Information & communication | 2025 |
| THE Prize Lounge Ltd | Wholesale & retail | 2026 |
| THE Property Xperts Limited | Real estate | 2017 |
| THE Prosperous Practice Ltd | Education | 2010 |
| THE Pukka Pooch Doggy Day Care Ltd | Other services | 2022 |
| THE Pukka Pooch Empawrium Ltd | Wholesale & retail | 2025 |
| THE Pukka Pooch Ltd | Wholesale & retail | 2021 |
| THE Quarterdeck Gosport Limited | Households | 2007 |
| THE Quiet Foundry Ltd | Manufacturing | 2026 |
| THE Razors Edge City Centre Ltd | Administrative & support | 2014 |
| THE Razors Edge North END Ltd | Administrative & support | 2014 |
| THE Real Exit Ltd | Arts & recreation | 2015 |
| THE Really Helpful IT Company Limited | Information & communication | 2005 |
| THE Recovery Room Health Clinic Limited | Health & social care | 2022 |
| THE Red Drop International | Health & social care | 2020 |
| THE Red Drop Ltd | Health & social care | 2018 |
| THE Reed Collective Limited | Construction | 2016 |
| THE Restoration Collective Ltd | Public administration | 2025 |
| THE Ridgeway Practice Limited | Health & social care | 2015 |
| THE Rifleman's Museum Trading Company Limited | Arts & recreation | 1987 |
| THE Road From Karachi CIC | Hospitality | 2023 |
| THE Rolling Stock & Engineering Co. Limited | Mining & quarrying | 1923 |
| THE Rowans Hospice Trading Company Limited | Wholesale & retail | 1988 |
| THE RUM Club Ltd | Manufacturing | 2015 |
| THE Salterns Academy Trust | Education | 2014 |
| THE Sarah Foundation | Education | 2017 |
| THE Secret Van MAN Ltd | Wholesale & retail | 2022 |
| THE Shanti Space Limited | Hospitality | 2019 |
| THE Shape Clinic Ltd | Other services | 2015 |
| THE Shared Homes Company (Hampshire) Limited | Real estate | 2022 |
| THE Shearer Arms Limited | Hospitality | 2004 |
| THE Show Globe Ltd | Arts & recreation | 2017 |
| THE Siaron Ltd | Construction | 2025 |
| THE Sinron Ltd | Real estate | 2025 |
| THE Sixth House Ltd | Wholesale & retail | 2023 |
| THE Smart Web Studio Ltd | Information & communication | 2024 |