| THE Holmes Group Limited | Wholesale & retail | 2025 |
| THE Home Shop Ltd | Professional & scientific | 2001 |
| THE HOP SLF Ltd | Hospitality | 2024 |
| THE Hot TUB MAN Limited | Manufacturing | 2021 |
| THE House Academy Limited | Real estate | 2018 |
| THE House of Splatter Ltd | Construction | 2026 |
| THE House That ASH Built Ltd | Information & communication | 2023 |
| THE HUT at Friends Farm Ltd | Hospitality | 2025 |
| THE Inner Gardener Ltd | Extraterritorial | 2016 |
| THE Institute of Classical Osteopathy | Information & communication | 1992 |
| THE Intellectual Property Counsel Limited | Professional & scientific | 2001 |
| THE International Printers Network Limited | Other services | 2003 |
| THE Invisible Assistant Ltd | Administrative & support | 2010 |
| THE Invisible Painter Limited | Construction | 2006 |
| THE ION (Reflection) Residents Company Limited | Households | 2001 |
| THE Isbister Group Holdings Limited | Financial services | 2024 |
| THE Isbister Group Property Limited | Real estate | 2024 |
| THE Isbister Group Trading Limited | Wholesale & retail | 2020 |
| THE Itchen Company Limited | Hospitality | 1996 |
| THE Jakpa Diary Ltd | Extraterritorial | 2023 |
| THE Jennifer Claire Company Ltd | Information & communication | 2018 |
| THE Jolly Farmer (Warsash) Limited | Hospitality | 2014 |
| THE Just Brand Company Ltd | Information & communication | 2011 |
| THE Keepsake Studio Ltd | Wholesale & retail | 2025 |
| THE Kennels Enterprises Limited | Wholesale & retail | 2021 |
| THE King of Love Ministries International | Other services | 2018 |
| THE Kingsland Tavern Ltd | Hospitality | 2025 |
| THE Lamb Inn (Nomansland) Limited | Hospitality | 2023 |
| THE Landscapers Coach Ltd | Professional & scientific | 2017 |
| THE Last Stop Inn Ltd | Hospitality | 2025 |
| THE Laurels (Southampton) Management Company Limited | Households | 2002 |
| THE Leela Vida Ltd | Health & social care | 2026 |
| THE Left Handers Ltd | Administrative & support | 2016 |
| THE Legal Works Solicitors Ltd | Professional & scientific | 2018 |
| THE Legend Room Barber Ltd | Other services | 2025 |
| THE Limes (Catisfield) Management Company Limited | Households | 2014 |
| THE Listening Hub Limited | Health & social care | 2024 |
| THE Little Berry Ltd | Other services | 2023 |
| THE Little Moose Ltd | Professional & scientific | 2023 |
| THE Little Platoon Ltd | Professional & scientific | 2023 |
| THE Lodge Bar & Grill Ltd | Hospitality | 2021 |
| THE Loft Consulting Limited | Professional & scientific | 2016 |
| THE Loft Ranger Ltd | Construction | 2026 |
| THE Logic Store Limited | Administrative & support | 2006 |
| THE Lunch Lounge Limited | Hospitality | 2015 |
| THE Lure Lodge Ltd | Wholesale & retail | 2014 |
| THE Lush Pizza Company Limited | Hospitality | 2020 |
| THE Luxury Wellness Group Ltd | Financial services | 2024 |
| THE Maiden Factor Foundation | Education | 2014 |
| THE Maiden Factor Limited | Health & social care | 2016 |
| THE Main Agency Group Limited | Professional & scientific | 2023 |
| THE Malthouse (Romsey) Management Limited | Households | 2006 |
| THE Mane Dealer Limited | Wholesale & retail | 2022 |
| THE Manna House Bakery Ltd | Manufacturing | 2018 |
| THE Manufacturers' Information Hub (UK) | Other services | 2025 |
| THE Marc Collective Limited | Professional & scientific | 2017 |
| THE Marketing Genie Ltd | Administrative & support | 2024 |
| THE Marlborough Inn Ltd | Hospitality | 2025 |
| THE Matchgirls Memorial | Education | 2019 |
| THE Meadows (Upham) Management Limited | Water & waste | 1996 |
| THE Meat Stall Limited | Hospitality | 2023 |
| THE Media Locker Limited | Information & communication | 2021 |
| THE Medina Old Town Ltd | Hospitality | 2025 |
| THE Meeting House Limited | Extraterritorial | 2004 |
| THE Men's MOT Limited | Health & social care | 2025 |
| THE Merriman Partnership Limited | Administrative & support | 2014 |
| THE Mill at Botley Limited | Hospitality | 2024 |
| THE Mill House Stoke Bishop Ltd. | Hospitality | 2015 |
| THE Millennium Field Company Limited | Households | 2001 |
| THE Millennium Third AGE Centre | Public administration | 2000 |
| THE Millions Global Ltd | Professional & scientific | 2016 |
| THE Mimshack Digi Ltd | Wholesale & retail | 2025 |
| THE Mint Yard Limited | Arts & recreation | 2015 |
| THE Mirror Suites Assets Ltd | Real estate | 2025 |
| THE Mirror Suites Holdings Ltd | Financial services | 2025 |
| THE Mirror Suites Ltd | Hospitality | 2025 |
| THE Missing Brick Ltd | Wholesale & retail | 2024 |
| THE Modest Closet Ltd | Wholesale & retail | 2022 |
| THE Modest Collection Ltd | Wholesale & retail | 2025 |
| THE Money JAR Limited | Financial services | 2012 |
| THE Mooching Pooch Limited | Wholesale & retail | 2023 |
| THE Mortgage HUT Ltd | Financial services | 2011 |
| THE Mortgage Packager Limited | Financial services | 2001 |
| THE Mortimer Arms Limited | Hospitality | 2018 |
| THE Motorists Centre (New Milton) Limited | Wholesale & retail | 2009 |
| THE Movement LAB Limited | Professional & scientific | 2025 |
| THE Moving Shop (UK) Limited | Professional & scientific | 2013 |
| THE Mulberry Bush (Bitterne Park) Limited | Health & social care | 2017 |
| THE Mulberry Bush (Eastleigh) Limited | Education | 2014 |
| THE Mulberry Bush (Hedge END) Limited | Financial services | 2016 |
| THE Mulberry Bush (Locks Heath) Limited | Education | 2013 |
| THE Mulberry Bush (Waterlooville) Limited | Other services | 1995 |
| THE Myers Touch Limited | Professional & scientific | 2004 |
| THE NAG Shack Ltd | Extraterritorial | 2012 |
| THE Nail Company Whiteley Ltd | Other services | 2026 |
| THE Nails Studio Ltd | Other services | 2024 |
| THE Naked Agenda Ltd | Wholesale & retail | 2025 |
| THE National Needlework Archive | Education | 2010 |
| THE Nature UC Ltd | Manufacturing | 2022 |
| THE Necessity Limited | Wholesale & retail | 2016 |