Jenson Button has claimed that his performance at the German Grand Prix was "destroyed" by the Caterhams in the final laps.
"They destroyed our race in terms of fighting for fifth place. They're obviously racing for position, but when you get blue flags you have to move over," Autosport quotes the Briton as saying.
"It was disappointing and I've spoken to them both and they didn't really think they did anything wrong.
"Obviously we all have our different views, but when you're fighting for position and you're lapping someone you expect the backmarkers to move over."