The next test flight of the firm’s SpaceShipTwo VSS Unity will see Branson trying out the private astronaut experience that Virgin Galactic eventually plans to sell to rich space tourists at a price of around £175,000 per ticket.

It will be the twenty-second flight test for the ship and its fourth crewed spaceflight, although the first to carry a full crew of two pilots and four mission specialists in the cabin.

The flight is designed specifically for Branson and his crew to evaluate the commercial experience, including the cabin environment, seat comfort, the weightlessness, as well as the views of Earth that the spaceship delivers.

Following this flight the team plans to complete inspections of the vehicles and an extensive data review, which will inform the next steps in the test flight programme. Two additional test flights are planned before Galactic’s expected commencement of a commercial service in 2022.

Sir Richard Branson said: “I truly believe...