| THE Consultancy Brief Ltd | Professional & scientific | 2010 |
| THE Couper Collection (Brighton) Ltd | Hospitality | 2024 |
| THE Crafthouse Collective Ltd | Administrative & support | 2014 |
| THE Crescent House Charity | Health & social care | 2017 |
| THE Cumberland Terrace Roof Group Ltd | Construction | 2025 |
| THE Curzon House Residents' Co Limited | Households | 1997 |
| THE Denes Motors Limited | Real estate | 1984 |
| THE Dental Hygiene Clinic Limited | Health & social care | 2015 |
| THE Dental Practice Mariner Point Limited | Health & social care | 2021 |
| THE Dering Development Co Ltd | Real estate | 2013 |
| THE Dials (Hove) Limited | Wholesale & retail | 2014 |
| THE Dials Gym Ltd | Arts & recreation | 2024 |
| THE Dials Ltd | Wholesale & retail | 2026 |
| THE Diet and Lifestyle Project Ltd | Information & communication | 2025 |
| THE Dinosaur Roar Company Limited | Administrative & support | 2008 |
| THE Diocese of Chichester Education Trust | Education | 2013 |
| THE DON Productions Ltd | Information & communication | 2025 |
| THE Dragonfly Coach Ltd | Health & social care | 2022 |
| THE Drainage Squad Ltd | Administrative & support | 2025 |
| THE Durbeyfield Limited | Hospitality | 2017 |
| THE EGR Group Limited | Professional & scientific | 2009 |
| THE Electrical POD Ltd | Real estate | 2009 |
| THE Endurance Project Coaching Ltd | Arts & recreation | 2021 |
| THE Enthum Foundation | Health & social care | 2007 |
| THE European Poker Players Hall of Fame Limited | Professional & scientific | 2004 |
| THE Excelsior (Brighton) Limited | Households | 2004 |
| THE Expert Witness Company S.E Limited | Administrative & support | 2023 |
| THE Fallowfield Clinic Ltd | Other services | 2020 |
| THE Family Law Toolkit Ltd | Information & communication | 2025 |
| THE Fancy Liquor Co Limited | Extraterritorial | 2000 |
| THE Feng Shui Touch Ltd | Arts & recreation | 2012 |
| THE Fine Art Warehouse Ltd | Wholesale & retail | 2019 |
| THE Flight Runner Limited | Transport & logistics | 2021 |
| THE Fredbrown Group Limited | Hospitality | 2024 |
| THE Galleries (Palmeira Avenue) Limited | Households | 2009 |
| THE Garden Room & Annex Company Limited | Construction | 2025 |
| THE GHC Consultancy Limited | Professional & scientific | 2014 |
| THE Gordon Connection Ltd | Information & communication | 2006 |
| THE Grange Rest Home Limited | Health & social care | 1989 |
| THE Green Cleaner Ltd | Other services | 2009 |
| THE Grove News Limited | Wholesale & retail | 2025 |
| THE Hangleton & Knoll Project | Health & social care | 2010 |
| THE Happy Startup School Limited | Information & communication | 2007 |
| THE Hartfield Road Dental Practice Limited | Health & social care | 2012 |
| THE Hatt Limited | Arts & recreation | 2011 |
| THE Healthy Life Foundation | Health & social care | 2015 |
| THE Heath Clinic Aesthetics Ltd | Health & social care | 2025 |
| THE Herb Kitchen Ltd | Hospitality | 2018 |
| THE Hive Lewes Limited | Administrative & support | 2011 |
| THE Home Renovation Company (Worthing) Limited | Construction | 2019 |
| THE Hove Counselling Practice Ltd | Professional & scientific | 2023 |
| THE Hove DEN Ltd | Wholesale & retail | 2026 |
| THE I.C Partnership Limited | Administrative & support | 2001 |
| THE Implant Centre Limited | Health & social care | 2006 |
| THE Indie Strategist Ltd | Professional & scientific | 2025 |
| THE Inspired Stories Ltd | Wholesale & retail | 2020 |
| THE International on Line Bridge Club Limited | Other services | 1999 |
| THE LAB Collective | Administrative & support | 2012 |
| THE Lanes Property Investment Ltd | Real estate | 2024 |
| THE Learning People Ltd | Education | 2010 |
| THE Learning People UK Limited | Education | 2023 |
| THE Levant Lounge Ltd | Hospitality | 2019 |
| THE Lewes Pastry Company Limited | Manufacturing | 2021 |
| THE Leyshon Consultancy Ltd | Information & communication | 2019 |
| THE Lgbtq Shop Ltd | Wholesale & retail | 2020 |
| THE Lifecycle Agency Ltd | Professional & scientific | 2012 |
| THE Lime Studios Ltd | Information & communication | 2022 |
| THE Link Centre Limited | Education | 2026 |
| THE Listening Collective Ltd | Professional & scientific | 2022 |
| THE Little Doggy Day Care (Sussex) Ltd | Other services | 2026 |
| THE Little Jack Fish Limited | Hospitality | 2026 |
| THE Little Pharaoh Limited | Transport & logistics | 2015 |
| THE Local Shutter Company Ltd | Construction | 2019 |
| THE Lodge Coffee Shop (Seaford) Limited | Hospitality | 2019 |
| THE Lodge Thurnby Ltd | Health & social care | 2003 |
| THE London Hair Clinic Limited | Other services | 2005 |
| THE London Lyme Clinic Ltd | Health & social care | 2015 |
| THE Longer Tail Ltd | Administrative & support | 2011 |
| THE Lotus Dental Group Limited | Financial services | 2021 |
| THE Lotus Properties Holdings Limited | Real estate | 2021 |
| THE Lyme Clinic Ltd | Health & social care | 2015 |
| THE Lytle Group Limited | Financial services | 2020 |
| THE Maltings Barn (Lewes) Management Company Limited | Households | 1994 |
| THE MAN From DEL Minty Ltd | Professional & scientific | 2024 |
| THE Manor Brewing Company Ltd | Manufacturing | 2025 |
| THE Mariners (Apartments) Management Company Limited | Administrative & support | 1999 |
| THE Mariners (Shoreham) Management Company Limited | Households | 1999 |
| THE Martin Reiss Hanson Trustees Limited | Real estate | 1999 |
| THE Martlets Hospice Limited | Health & social care | 1988 |
| THE Martlets Trading Co Ltd | Wholesale & retail | 2002 |
| THE Meeting Place Limited | Hospitality | 2000 |
| THE Mehfil Space CIC | Education | 2024 |
| THE Mellish Group Limited | Construction | 2007 |
| THE Montessori Place (Holdings) Limited | Administrative & support | 2015 |
| THE Montessori Place Limited | Administrative & support | 2010 |
| THE Mortgage House Ltd | Financial services | 2006 |
| THE Mummy Physio Limited | Health & social care | 2023 |
| THE Muscat Coffee Company Limited | Information & communication | 2000 |
| THE Natural Balance Nutrition Ltd | Health & social care | 2021 |
| THE Natural Body Company Ltd | Extraterritorial | 2024 |