A war of words has erupted in the Formula 1 paddock with Racing Point team boss Otmar Szafnauer hitting back at Zak Brown’s “BS” comment, saying the American knows “little” about F1.

The FIA handed down its verdict on Racing Point’s copycat brake ducts ahead of Friday’s practice for the 70th Anniversary Grand Prix, triggering a spate of legal responses.

According to the FIA, Racing Point’s front brake ducts are legal but the rears are not.

However, they are not legal from a sporting stand point, not a technical one meaning the team can continue to run the ducts for the rest of the season.