| THE Poplars Fishbourne Limited | Real estate | 2010 |
| THE Print Works (Chichester) Management Company Ltd | Real estate | 2013 |
| THE Production Garden Limited | Arts & recreation | 2022 |
| THE Really Brilliant Company Limited | Manufacturing | 2014 |
| THE Reassurance Network Limited | Professional & scientific | 2003 |
| THE Redmoor Partnership LLP | | 2024 |
| THE Relaxing Hideaways Ltd | Real estate | 2024 |
| THE Rights Solution Ltd | Information & communication | 2019 |
| THE Roddick Foundation | Education | 1997 |
| THE Rooflight Association Limited | Other services | 2021 |
| THE Rummers Limited | Households | 2005 |
| THE Rusty Toy Vault Limited | Wholesale & retail | 2026 |
| THE Samtra Group Ltd | Construction | 2026 |
| THE Sauna HUT Ltd | Other services | 2026 |
| THE Sausage Dog Shop Ltd | Wholesale & retail | 2023 |
| THE Sayer Team Limited | Real estate | 2011 |
| THE Sculpture Partnership LLP | | 2019 |
| THE Seaside Jungle Company Ltd | Wholesale & retail | 2021 |
| THE Selsey Shuttle C.I.C. | Transport & logistics | 2015 |
| THE Shed & Courtside Hospitality Ltd | Hospitality | 2026 |
| THE Shed Chidham Limited | Arts & recreation | 2025 |
| THE Shipshape PUB Company Limited | Hospitality | 2017 |
| THE Skillset Group Ltd | Administrative & support | 2015 |
| THE Society for Clinical Ophthalmology | Extraterritorial | 2007 |
| THE Society of Vintners Limited | Wholesale & retail | 1974 |
| THE Sonic Space CIC | Information & communication | 2021 |
| THE Square Lemon Training Company Ltd | Education | 2012 |
| THE Standard P Ltd | Hospitality | 2019 |
| THE Stove Shop Limited | Wholesale & retail | 2002 |
| THE Strategy Edge Limited | Arts & recreation | 2018 |
| THE Summer Berry Company Holdings Limited | Agriculture & fishing | 2019 |
| THE Summer Berry Company UK | Agriculture & fishing | 1987 |
| THE Supplement Kitchen Ltd | Wholesale & retail | 2022 |
| THE Sussex Bar and Food Company Limited | Real estate | 2009 |
| THE Sussex Bookshop Limited | Wholesale & retail | 2024 |
| THE Sussex Food Co Limited | Hospitality | 2015 |
| THE Sussex Guild | Other services | 1983 |
| THE Sussex Guild Shop Limited | Wholesale & retail | 2009 |
| THE Sussex HR Hub Ltd | Other services | 2013 |
| THE Sussex Music & Art Company Ltd | Professional & scientific | 2018 |
| THE Taco Box Events Co Ltd | Hospitality | 2024 |
| THE Talent Finder Bureau Limited | Administrative & support | 2011 |
| THE Tea Room (Solent) Limited | Hospitality | 2010 |
| THE Teak MEN Limited | Manufacturing | 2021 |
| THE Temples NJ Limited | Wholesale & retail | 2017 |
| THE Tomato Stall Limited | Wholesale & retail | 2007 |
| THE Training House (Sussex) Ltd | Professional & scientific | 2022 |
| THE True Leader Company Ltd | Professional & scientific | 2014 |
| THE Tyre Clinic Ltd | Wholesale & retail | 2019 |
| THE University of Chichester | Education | 2003 |
| THE University Press Group (US) Limited | Administrative & support | 1992 |
| THE Victualler Limited | Real estate | 2017 |
| THE Waldrons Freehold Limited | Real estate | 2017 |
| THE Wandering Monkey Co. Limited | Other services | 2004 |
| THE Wellington Mews (Chichester) Management Company Limited | Households | 2017 |
| THE West Pallant House Management Company Limited | Households | 1989 |
| THE Westcott Group Ltd | Education | 2015 |
| THE White Swan Hotel Ltd | Hospitality | 2026 |
| THE Wicked Burger Company Ltd | Hospitality | 2016 |
| THE Willowfield Group Ltd | Financial services | 2020 |
| THE Wittering Group Limited | Hospitality | 2021 |
| THE Witterings Building Company Ltd | Construction | 2013 |
| THE Wren Centre Limited | Real estate | 2013 |
| THE Wrenn Ltd | Hospitality | 2026 |
| THE Youngs Family Limited | Households | 2021 |
| THE57PUBCOMPANY Limited | Hospitality | 2024 |
| Theisocentre Ltd | Administrative & support | 2020 |
| Thermco Limited | Real estate | 2019 |
| Thesafeguardingcop Ltd | Professional & scientific | 2023 |
| Thesis Asset Management Limited | Financial services | 1984 |
| Thesis Nominees Limited | Professional & scientific | 1988 |
| Thesis Services Limited | Administrative & support | 2018 |
| Thesis Technology Products Limited | Manufacturing | 1994 |
| Thesis Unit Trust Management Limited | Financial services | 1998 |
| Think Build Enjoy Ltd | Professional & scientific | 2026 |
| Think Leopard Limited | Information & communication | 2016 |
| Think Scaffolding Ltd | Construction | 2024 |
| Third Avenue Road Management Limited | Households | 2004 |
| Thirty Consultancy Ltd | Professional & scientific | 2020 |
| Thirty One Property Management Ltd | Real estate | 2025 |
| Thirunarayan Productions Ltd | Arts & recreation | 2025 |
| This IS the Box Limited | Information & communication | 2012 |
| This Life Agency Ltd | Wholesale & retail | 2013 |
| THL Maintenance Ltd | Construction | 2020 |
| Thomas Charles Automotive Limited | Wholesale & retail | 2016 |
| Thomas Family Investments Limited | Financial services | 2017 |
| Thomas Lewis Holdings Limited | Financial services | 2026 |
| Thomas Newell Limited | Construction | 2001 |
| Thorgodrake SPV Ltd | Financial services | 2023 |
| Thorn GAS Services Limited | Construction | 2006 |
| Thornbury Properties Ltd | Real estate | 2008 |
| Thorney Road Developments Ltd | Construction | 2019 |
| Thornton Place Residents Company Limited | Households | 2007 |
| Thoroughbuild Ltd | Construction | 2013 |
| Thrive Psychological Services Limited | Health & social care | 2024 |
| Throughlines Therapy Limited | Health & social care | 2025 |
| Thursdaythinking.Digital Ltd | Professional & scientific | 2017 |
| Tiger Young Ltd | Real estate | 2020 |
| Tigerteam Software Ltd | Information & communication | 1999 |
| Tiki Beach Ltd | Hospitality | 2024 |