First broadcast 27th September 1976.br br Technophobe Regan is initially all at sea when he comes up against the clever computer expert Tony Grey.br br John Thaw - Reganbr Dennis Waterman - Carterbr Garfield Morgan - Haskinsbr John Hurt - Tony Greybr George Cole - Dennis Longfieldbr Peter Bayliss - Burnhambr Ann Curthoys - Dr.