G4S is South Africa's leading provider of security solutions.
It is part of the worldwide G4S plc group of companies and its South African head office is in Hatfield, Pretoria.
G4S operates in three key sectors: security services (including manned security and justice services), security systems and cash services.
G4S's reputation for quality in the guarding sector is based both on its extensive employee screening processes and the high level of training provided, the company says on its website.
"Most cash transportation takes place between cash centres (where cash is stored and processed) and customer outlets such as bank branches and retail stores.
"G4S also transports valuables such as precious metals and diamonds through G4S International, our valuable transport business," the website says.
G4S spokesman Wendy Hardy could not give managing director Douglas Brake's numbers.
"I will not be able to hand it out. He has already left the office," she said.