| Advanced Rigging and Hydraulics Limited | Manufacturing | 2020 |
| Ancasta Group Limited | Professional & scientific | 2001 |
| Ancasta Topco Limited | Manufacturing | 2014 |
| Ancasta Yacht Services Limited | Manufacturing | 1961 |
| Boat Sales International Limited | Wholesale & retail | 2007 |
| Boss Offshore Sailing School Limited | Administrative & support | 1991 |
| Bournemouth Bars Limited | Hospitality | 2013 |
| Casse Tete Marine Limited | Manufacturing | 1993 |
| Castlegate Management Services Limited | Real estate | 1988 |
| Compass Tenders Ltd | Manufacturing | 2007 |
| Dogbox Properties Limited | Hospitality | 2018 |
| Excelitas UK Limited | Manufacturing | 1993 |
| Fantasy Entertainment Limited | Hospitality | 2018 |
| Giftmid Limited | Information & communication | 1989 |
| Halyards Management Company Limited | Households | 1990 |
| Hamble School of Yachting Limited | Education | 2005 |
| Hamble Sea School Limited | Arts & recreation | 2005 |
| I Also Marine Services Ltd | Manufacturing | 2023 |
| JAG Events Limited | Arts & recreation | 2017 |
| JCW (UK) Limited | Hospitality | 2011 |
| JO Anderson ITT Consultancy Ltd | Education | 2024 |
| Krayon Limited | Professional & scientific | 2015 |
| London Business School Alumni Sailing Club Limited | Education | 2024 |
| Mighty APE Media Limited | Manufacturing | 2011 |
| NKT Photonics Holding Ltd | Professional & scientific | 2009 |
| Offshore Sea School Limited | Administrative & support | 1991 |
| ON Point Yacht Services Limited | Administrative & support | 2018 |
| Osmotech U.K. Limited | Manufacturing | 1993 |
| PCA (2014) Ltd | Administrative & support | 2014 |
| Pearl Restaurants Limited | Hospitality | 2011 |
| Playhouse Clubs Limited | Hospitality | 2011 |
| Qioptiq Photonics Limited | Manufacturing | 2025 |
| Qioptiq UK Holdings Ltd | Professional & scientific | 2005 |
| Rookery Ventures Limited | Professional & scientific | 2006 |
| Royal Air Force Yacht Club Limited(The) | Professional & scientific | 1952 |
| Royal Yachting Association | Education | 1966 |
| Sanlorenzo Yachts Limited | Wholesale & retail | 2020 |
| Sightglass Vision UK Limited | Manufacturing | 2022 |
| Sisko Ltd | Other services | 2020 |
| THE Big Growth Estate Company Limited | Real estate | 2006 |
| Wavelength Holdings Limited | Administrative & support | 1993 |