Mercedes driver Lewis Hamilton says he intends to be in Formula 1 for "at least another three years".
The 35-year-old world champion is out of contract with Mercedes at the end of this year but said he planned to continue "for the foreseeable future".
Hamilton is preparing for the British Grand Prix, which he has won six times.
"I want to perform at the level I'm performing at now forever, but there is a point when physicality and the mental side can tail off," he said.
"I don't know when that's going to be but I don't see it happening in the short term, in the next two or three years."
