An aircraft worthy of the title “Son of Concorde” has moved one stage closer.

Boom Supersonic has obtained funding of $100m (£79m) for the next stage of its project to create a commercial aircraft, known as Overture, planned to fly at more than twice the speed of sound, with a range of 5,180 miles.

A half-size prototype, known as XB-1, is set to fly later in 2019. The firm claims it is “history’s first independently developed supersonic jet and the fastest civil aircraft ever built”.

Once the Boom Overture is in commercial service, routes such as London to Mumbai, Manchester to Dallas-Fort Worth and Edinburgh to Vancouver will take around four hours – better than half the time of conventional jets.