Christian Horner has hit out at the FIA's decision to introduce new aerodynamic regulations for 2019, but Ferrari and Mercedes support changes.
Formula 1 wanted to move the British GP to April next year so that Silverstone could host the sport's 1,000th grand prix.
The prospect of a 2019 grand prix in Miami has moved a step closer after the City of Miami Commission voted in favour of the proposal.
Formula 1 announce proposal to hold Grand Prix in Miami in 2019, with City of Miami Commission to now vote on whether to proceed.
The FIA has confirmed a number of new aerodynamic regulations for the 2019 Formula 1 season in a bid to improve overtaking.