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It's essential that co-stars of a TV show gel - after all, their on-screen relationship depends on it.

The new stars of Doctor Who have no trouble with this, as a brilliant video of them singing, which has been posted on Bradley Walsh's Instagram page, proves.

The video at first shows The Chase presenter - who plays The Doctor's (Jodie Whittaker) new friend, Graham - on his own miming to ultimate power ballad, Alone, by 1980s soft rock band, Heart.

Before the air-pumping chorus kicks in, the actor shouts: "Rack it up Joey!" And then the camera pans to show Jodie, Mandip Gill and Tosin Cole joining in, singing along and recreating the famous Wayne's World scene, just with a different song.

Gill and Cole play Yaz and Ryan, respectively, two more of The Doctor's brand new friends (that's right, they're not called companions anymore).

The quartet enjoyed their little lipsync battle in the car and there was fist-pumping and gurning galore.

It's no surprise that they are happy, though - the series opener of Doctor Who, which aired last Sunday, drew 8.2million viewers and Jodie's new Timelord is getting rave reviews.

Doctor Who continues on BBC One, Sunday, at 6.55pm