The circuit activated its clause due to the increase cost of hosting the race, casting a doubt over the Grand Prix's future which has been on the F1 calendar every year.
Vietnam will host a Formula One grand prix for the first time in 2020 after a "multi-year deal" was agreed for races to be staged in Hanoi.
While the British Grand Prix has been on the F1 calendar since the very beginning in 1950, Silverstone used to share the race with Brands Hatch before becoming the sole host in 1987. Hamilton won the Brazilian race in 2016 and lifted his first F1 title in Sao Paulo 10 years ago, finishing fourth after a dramatic overtake on the last lap.
"You can't just hold a race and believe people will go out to buy go-karts and build go-kart tracks", Edmondson told AFP from London.
Lewis Hamilton is unsure whether the addition of the Vietnam Grand Prix is necessary in a Formula One calendar already standing at 21 races.
Facing financial strains, all three pulled the plug on hosting the race in the past five years, a warning sign for ambitious cities tempted to enter the costly sport.More news: Mourinho 'never gave up' on in-form Martial
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"We'll continue to develop those options, and make sure we are able to make the best decisions both for fans and for racing and for us as a business, all those things matter, and we're actively engaged".
The announcement of F1 racing in Vietnam, a country with absolutely no motorsport heritage, was greeted with a fair amount of negativity by many fans on social media, who wondered why the sport was not doing more to preserve its heritage.
"We are a public company and we have a lot of stakeholders and shareholders and we're trying to marry what's best for fans with running a successful business". "Firstly, we want to preserve the heritage races". I'm talking about the Silverstones, the Spas, the Monzas of this world. Vietnam's concept of what grand prix racing should be about matches our vision for the sport.
After months of rumors, Formula 1 confirmed Wednesday that it will race in Vietnam's capital of Hanoi come 2020.
The Hanoi race will be run on a 5.565-kilometer layout in the west of the city, adding another street race to the existing ones in Monaco, Singapore, Azerbaijan and Melbourne's Albert Park in Australia.
It originally looked like the proposed Miami street race would have that honour.