Mark Edward Thistlethwayte

Procomm Site Services Ltd. provides accommodation solutions. It offers bespoke modular buildings, CTX accommodation, jackleg accommodation steel, welfare accommodation, timber jackleg and secure storage and containers. The company was founded in 2002 and is headquartered in Redcar, the United Kingdom.

Hi-Tech Mouldings Ltd. manufactures and supplies plastic injection moldings. The company is headquartered in Waterlooville, the United Kingdom.

ARROW Industrial Group Ltd. manufactures, wholesales and installs roll and crash doors. The company was founded in 1986 and is headquartered in Hull, the United Kingdom.

Part of Portchester Equity Ltd., Hi-Technology Holdings Ltd. is an investment holding British company. The company is based in Waterlooville, UK. Hi-Technology Holdings was founded in 2014.

W. H. Davis Ltd. designs and manufactures transportation equipment. Its products include rail freight wagons, containers, offshore, industrial trailers and avonseal - rubber door seals for freight containers and vehicles. The firm also offers wagon conversion, new for old, Davis wagon services, container refurbishment and repair services. The company was founded in 1908 and is headquartered in Mansfield, the United Kingdom.

Leafield Logistics & Technical Services Ltd. engages in the management of naval stock for ex Royal Navy vessels serving overseas navies and disposal of naval material declared surplus by the UK Ministry of Defence. The company was founded in 1992 and is headquartered in Corsham, the United Kingdom.

Winchester Solar Ltd. engages in the generation of solar electricity. The company was founded on January 28, 2014 and is headquartered in Winchester, the United Kingdom.

Part of Portchester Equity Ltd., W.H. Davis (Holdings) Ltd. is an investment holding British company. The company is based in Mansfield, UK. Founded in 2008, W.H. Davis (Holdings functions as an investment holding company.

Welborne Land Ltd. is a privately owned holding British company that partners with management teams to execute an agreed strategy. The company was founded in 2017 and is based in Winchester, UK. In 2007, the family began investing in operating companies as part of its strategy. The company's foundations have been built upon many generations, dating back to 1539 when the Thistlethwayte family first acquired the Southwick Estate.