| Ashlett PUB Limited | Real estate | 2012 |
| Canadian Superior OIL (U.K.) Limited | Professional & scientific | 1964 |
| DSI Group Limited | Real estate | 2000 |
| Esso Exploration and Production UK Limited | Mining & quarrying | 1925 |
| Esso Petroleum Company,Limited | Manufacturing | 1888 |
| Esso UK Limited | Financial services | 1981 |
| Exxonmobil Aviation International Limited | Professional & scientific | 1997 |
| Exxonmobil Chemical Investment Company Limited | Financial services | 2016 |
| Exxonmobil Chemical Limited | Manufacturing | 1965 |
| Exxonmobil Engineering Europe Limited | Professional & scientific | 1965 |
| Exxonmobil Finance Company Limited | Administrative & support | 2004 |
| Exxonmobil Financial Investment Company Limited | Administrative & support | 2016 |
| Exxonmobil GAS Marketing Europe Limited | Wholesale & retail | 1990 |
| Exxonmobil Holding Company Limited | Financial services | 2013 |
| Exxonmobil Hong Kong Investments Limited | Financial services | 2017 |
| Exxonmobil International Limited | Administrative & support | 1999 |
| Exxonmobil Investment Company Limited | Financial services | 2004 |
| Exxonmobil Marine Limited | Wholesale & retail | 1999 |
| Exxonmobil Netherlands Investments Limited | Financial services | 2022 |
| Exxonmobil Pension Trust Limited | Financial services | 1941 |
| Exxonmobil SNS Limited | Mining & quarrying | 2024 |
| Exxonmobil UK Holdings Company Limited | Financial services | 2020 |
| Exxonmobil UK Holdings International Company Limited | Financial services | 2020 |
| Exxonmobil UK Limited | Financial services | 1999 |
| Fawley Partners LLP | | 2015 |
| Fawley Transfer Ltd | Real estate | 2020 |
| Fawley Waterside (UK) Limited Partnership | | 2021 |
| FD Operations Ltd | Administrative & support | 2021 |
| Hamlet Court Freeholders Limited | Households | 2002 |
| International Marine Transportation Limited | Transport & logistics | 1952 |
| Land Acquisition & Promotion LLP | | 2008 |
| Melfort Enterprises Limited | Administrative & support | 2014 |
| Melfort Ventures Ltd | Professional & scientific | 2013 |
| Riccarton Properties LLP | | 2013 |
| Rider Controls Limited | Manufacturing | 1992 |
| Seamless Stone Limited | Manufacturing | 2021 |
| Solent Electrical Domestic Installations LLP | | 2017 |
| Solent Electrical Installations Ltd | Energy | 2016 |
| Waterside Marine Limited | | 1980 |
| XTO UK, Ltd | Mining & quarrying | 2005 |