John Andrew Woollhead

Certas Plc provides engineering services. Its services include civil, access, rail transmission and telecommunications services. These services are provided through its Eve Trakway, Eve Transcom, JacksonEve and Jackson Civil Engineering units. The company is headquartered in Reigate, UK

Coe Group Ltd. designs and manufactures products for surveillance, transmission and management of video over internet protocol, fiber and hybrid video networks. The company was founded by Mark Marriage and Mark Waddington on April 20, 1913 and is headquartered in Abingdon, the United Kingdom.

Detica Group Plc provides business process consulting, information technology, and system implementation services. It also offers various solutions such as national security, compliance and risk, fraud and security, business intelligence, customer relationship management, and research authoring solutions as well as delivers transaction service level assurance. The company was founded in 1971 and is headquartered in Guildford, UK

Peterhouse Group Plc provides infrastructure support services to companies. It offers services to the rail, power, and telecommunications sectors. The company is headquartered in Elland, UK.

Waterfall Solutions Ltd. engages in the provision of information technology consultancy services. The company was founded on September 22, 1999 and is headquartered in Abingdong, the United Kingdom.