The Amells, who play TV superheroes on Arrow and The Flash, are the brains behind a new short film, called Code 8, which they are hoping to turn into a feature with the help of fans.

The relatives will star in the film, which is set in a world where four per cent of the population are born with supernatural abilities.

They have launched an Indiegogo campaign in the hope that fans share their vision.

Those who donate to the cause will get the chance to race Robbie on a go-kart track and join the cousins at their birthday parties.