Plexus Holdings Plc engages in the provision of oil and gas engineering services. Its POS-GRIP Technology is mainly used as a metal interface seal, which permanently contains methane gas in wellheads, throughout the life of a producing well. Its products include surface wellheads, connectors & trees and valves. The company was founded by Bernard Herman van Bilderbeek in 1986 and is headquartered in Worthing, the United Kingdom.