FIA boss Max Mosley call Jackie Stewart a "certified halfwit' in response to the Scot's criticisms of the large fine handed to McLaren for the F1 spying scandal.

Following the WMSC decision on the scandal Stewart declared the sanction "unjustifiable". Mosley responded on Monday "There's one particular ex-driver who because he never stops talking, never has the chance to listen – so he doesn't know what's going on".

Mosley went on to say, "He goes round dressed up as a 1930s music hall man. He's a certified halfwit."