A fuel control system for controlling the supply of fuel to an engine, the control system being characterised by comprising; pump means (20, 24; 52) for providing a flow of fuel to said engine; first and second drive means (28, 30) for driving said pump means; and, control means (32, 34; 62) for controlling said first and second drive means; wherein, said control means is arranged to control said first and second drive means such that in the event of failure of one of said first and second drive means, said pump means is driven by the other of said first and second drive means.