| THE Hoffman Partnership Ltd | Professional & scientific | 2025 |
| THE Hollycombe Working Steam Museum | Arts & recreation | 1995 |
| THE Idsworth Farming Limited Partnership | | 1993 |
| THE Independent Holiday Shop Ltd. | Administrative & support | 1993 |
| THE Learning Curve (Consultancy) Ltd | Administrative & support | 2002 |
| THE Lighthouse Cookshop Ltd. | Wholesale & retail | 2007 |
| THE Local Tax Return Shop Limited | Financial services | 1995 |
| THE Local Tax Shop (Havant) Limited | Professional & scientific | 1995 |
| THE Marketing Element Limited | Professional & scientific | 1995 |
| THE Mazwell Group Limited | Wholesale & retail | 1985 |
| THE Midnight Deer Ltd | Administrative & support | 2006 |
| THE Moore Hall Playschool Ltd | Education | 2002 |
| THE Motorbike Shop Limited | Wholesale & retail | 2007 |
| THE Navigators UK Limited | Other services | 2002 |
| THE NO1 Recycling Team Ltd | Wholesale & retail | 2024 |
| THE Notaries' Guarantee Limited | Professional & scientific | 1993 |
| THE Old Dairy Farm BED & Breakfast Limited | Hospitality | 2011 |
| THE Old Dairy Farm Livery Yard Limited | Agriculture & fishing | 2011 |
| THE Old Ironmongers Property Company Limited | Construction | 2007 |
| THE Old Shed Limited | Wholesale & retail | 2004 |
| THE Old Tisbury Brewery Management Company Limited | Households | 2001 |
| THE Old Vine Hotel Limited | Hospitality | 2005 |
| THE Orchard Down Consultancy Limited | Professional & scientific | 1999 |
| THE Portsmouth Grammar School | Education | 1997 |
| THE Railway (Christchurch) Limited | Hospitality | 2008 |
| THE Residents Association (Nightingales) Limited | Households | 1991 |
| THE Royal Navy and Royal Marines Charity | Education | 2007 |
| THE Sail Training Association | Arts & recreation | 2003 |
| THE Sales & Marketing Partnership Ltd | Wholesale & retail | 2003 |
| THE Seventh Cat Limited | Information & communication | 2007 |
| THE SKL Group Limited | Financial services | 2015 |
| THE Southdowns Natural Water Ltd | Manufacturing | 2006 |
| THE ST. Ursula Grove Management Company Limited | Households | 1999 |
| THE Swing Dance Company Limited | Wholesale & retail | 2003 |
| THE Thornycroft Society Limited | Administrative & support | 2005 |
| THE UK Travel Insurance Association Limited | Other services | 1993 |
| THE Walnut Tree Trading Company Limited | Wholesale & retail | 2004 |
| Thermofil Polymers (UK) Ltd. | Professional & scientific | 2000 |
| Thomas Parfitt & Lacey Limited | Financial services | 1990 |
| Thomas’S London Day Schools (Sport) Limited | Real estate | 2025 |
| Thomond Limited | Professional & scientific | 2012 |
| Thomsk Limited | Information & communication | 2005 |
| Thorns Young Limited | Professional & scientific | 2001 |
| Thornton Engineering Limited | Professional & scientific | 1999 |
| Tidal Blue Developments Limited | Construction | 2025 |
| Tidal Blue Limited | Real estate | 2019 |
| Tidal Blue Management Limited | Professional & scientific | 2025 |
| Tidal One Limited | Professional & scientific | 2025 |
| Tiemann Toms Limited | Financial services | 2000 |
| Tiger Software Limited | Information & communication | 2003 |
| Tilde Services Limited | Information & communication | 2000 |
| Tileasy Limited | Wholesale & retail | 1998 |
| Tillworks Limited | Extraterritorial | 2007 |
| Timbervision Ltd | Manufacturing | 2006 |
| Time Solutions (UK) Ltd | Information & communication | 2006 |
| Timeless Ltd | Information & communication | 2024 |
| Timelight Publishing Ltd | Information & communication | 1994 |
| TIN Building Services Ltd | Construction | 2007 |
| Tiny Town Kindergarten Limited | Education | 2004 |
| Tinymobilerobots UK Limited | Other services | 2023 |
| Tioli Consulting Limited | Professional & scientific | 2023 |
| TJR Site Services Ltd | Construction | 2007 |
| Toad Hall Day Nursery Limited | Education | 2000 |
| Toddington Estates Limited | Real estate | 1999 |
| Tonestech Ltd | Information & communication | 2025 |
| Tony Smith Plumbing and Heating Services Limited | Construction | 2002 |
| Top Book-Keeping Limited | Professional & scientific | 2002 |
| Topfix Construction Limited | Construction | 2004 |
| Topmarks Partnership Limited | Real estate | 2006 |
| Tormatt Assets Limited | Construction | 2007 |
| Total Profiles Limited | Manufacturing | 1987 |
| Total Refurbishment (Southern) Ltd | Construction | 2003 |
| Towerblock Limited | Real estate | 1997 |
| Trade Show Services Limited | Administrative & support | 2005 |
| Tradeamp Limited | Real estate | 2001 |
| Trafalgar Wharves Limited | Extraterritorial | 1965 |
| Transeng Limited | Manufacturing | 1992 |
| Transition Commodities Ltd | Mining & quarrying | 2021 |
| TRB Associates Ltd | Health & social care | 2015 |
| Tree Developments Limited | Professional & scientific | 1992 |
| Trend Marine Products Limited | Manufacturing | 1974 |
| Trendytray Ltd | Wholesale & retail | 2025 |
| Triac Solutions Limited | Information & communication | 2007 |
| Trim Interiors Ltd | Construction | 2016 |
| Trimmers Independent Traders Limited | Administrative & support | 2003 |
| Trimwise Limited | Arts & recreation | 1987 |
| Trio IT Services Ltd | Information & communication | 2014 |
| Tristech Truck and BUS Logistics Limited | Wholesale & retail | 2016 |
| Trojan Property Investments Limited | Real estate | 2007 |
| Troon Yacht Haven Limited | Arts & recreation | 1976 |
| Tropman & Co. Limited | Professional & scientific | 2002 |
| Truck Bizz Limited | Water & waste | 1996 |
| Truck Traders Limited | Wholesale & retail | 2004 |
| True Grit Inc Limited | Information & communication | 2003 |
| TRY Curry Ltd | Hospitality | 2015 |
| TTI International Limited | Information & communication | 1998 |
| Tufton Warren Farm LLP | | 2005 |
| Turn-Key Consultants Limited | Information & communication | 1993 |
| Tutti Frutti (Andover) Ltd | Other services | 2008 |
| TW Builders (Southern) Ltd | Wholesale & retail | 2006 |