Michael Schumacher may have apologised to Rubens Barrichello over the incident involving the pair at the Hungarian Grand Prix, but it hasn't stopped Sir Jackie Stewart from joining the list of people to hit out at the seven-time champion over his driving.

Schumacher was handed a ten-place grid penalty for the Belgian Grand Prix for the way in which he squeezed Barrichello towards the pit wall in the closing stages of the race at the Hungaroring, with the Williams driver coming close to hitting the pit wall as Schumacher continued to move over while the pair battled for tenth place.

Barrichello said he felt it was one of the most dangerous incidents he had ever been involved in while Schumacher initially insisted he had done nothing wrong before changing his view after studying video footage afterwards.

Speaking to the Daily Express, Stewart said he felt the penalty handed out to Schumacher was the minimum that stewards could have done and warned that things had to change before a serious accident occurs on track.

"We are never more than a millimetre away from something awful happening and for Schumacher to do what he did with Rubens Barrichello is just inviting disaster," he said. "For one driver to do that deliberately, knowing that the wheels could interlock and that he had nowhere to go, was shocking.

"It was one of the most blatant abuses of another driver that I have seen. It is a terrible example from a man who has seven world titles, bully-boy tactics. The punishment was the minimum they could do. It cannot go on."