Four supersonic jets vying to become the ‘son of Concorde’ with speedy 3.5 hour flights from London to New York

MAJOR projects to cut flights from London to New York City down by half are gaining speed – and could become a reality sooner than you think.

A number of supersonic ideas have emerged in recent years in a bid to be crowned the “son of Concorde”.

Concorde was the last supersonic service to run more than 20 years ago.

Its final journey ran from John F.