Sir Jackie Stewart is "fine" after his health scare on Wednesday, according to the famous Scot’s friend and former Stewart Grand Prix driver Rubens Barrichello.
"He had a full check up and he feels good now," the Brazilian veteran, who now drives for Williams, wrote on Twitter.
71-year-old triple world champion Stewart spent time in a London hospital after collapsing with chest pain during a flight from the Geneva motor show.
A spokesman for his office, describing Stewart’s problem as a "physical setback", said the family is "expecting a full recovery".
It is understood he was discharged from the west London hospital following precautionary checks.