18 stars you'd forgotten were in Doctor Who – including a Star Wars hero and a Game of Thrones favourite

Yes, that really is Once Upon a Time's Prince Charming – a pre-fame 'Joshua' Dallas played the part of... erm... 'Node 2' in 2008's 'Silence in the Library'.

Now best known as the new Michelle Fowler on EastEnders, Russell cameoed as a floor manager on Satellite Five's futuristic version of The Weakest Link, in 2005's 'Bad Wolf / The Parting of the Ways'.

Alias Peep Show's Super Hans, King played Peter Streete, architect of the Globe Theatre driven mad by the Carrionites, in 2007's 'The Shakespeare Code'.

Leave it out! Skinner (aka UK garage act The Streets) made a cameo as a security guard under River Song's spell in 2010's 'The Time of Angels'. Director Adam Smith had previously helmed the music video for Skinner's 2004 hit 'Blinded By the Lights'.

Before he faced the horrors of Get Out, Kaluuya (pictured here with David Ames) popped up in Doctor Who's one-and-only Easter special, 2009's 'Planet of the Dead'.

Three years before he debuted as EastEnders hunk Kush, current Strictly star Ghadami played Jim – a crew-member aboard shapeshifting humanoid starship the Teselecta in 2011's 'Let's Kill Hitler'.

These days, he's a bona-fide leading man, but before War and Peace, before Happy Valley, Norton appeared briefly as a Russian soldier offed by an Ice Warrior in 2013's 'Cold War'.

Armesto played dodgy taxi driver Clive Lucas in Broadchurch and henchman Tankard in Poldark... but before all that, he was short-lived Weakest Link contestant Broff in 'Bad Wolf'.

Garcia – later a judge on Got to Dance and Dancing with the Stars – took a break from stage musicals to play Alex, who unwittingly helped bring down PM Harriet Jones ("Don't you think she looks tired?") in 2005's 'The Christmas Invasion'.

Still best known as Guinevere / Gwen on the BBC's Merlin, Coulby appeared as Madame de Pompadour's confidante Katherine in a single scene in 2006 classic 'The Girl in the Fireplace'.

Later immortalised as Heather 'Hev' Trott on EastEnders, Fergison played crabby World War II housewife Mrs Lloyd in 'The Empty Child / The Doctor Dances'.

Dumezweni played UNIT Captain Magambo in 2008's 'Turn Left' and the following year's 'Planet of the Dead'. Though already an award-winning stage actress, her star soared after she was cast as as Hermione in the play Harry Potter and the Cursed Child in 2015.

Before he was Spider-Man-in-the-middle, Garfield gave his Peter Parker accent an early outing as Frank, an ally to the Doctor and Martha in 2007's 'Daleks in Manhattan / Evolution of the Daleks'.

Yates is better known as a TV host and DJ than actor (unless you count Rastamouse) but he appeared in four episodes of Doctor Who in 2007 as Martha Jones's clueless brother Leo.

The star of Rogue One was Ada Mullins, a cockney master thief known as 'The Unicorn' who'd been posing as socialite Robina Redmond in 2008's Agatha Christie-themed romp 'The Unicorn and the Wasp'.

Post-Skins but pre-Game of Thrones, Dempsie played Cline, who flirted with the Doctor's daughter (Georgia Moffett) in.... erm... 'The Doctor's Daughter' (2008) and later witnessed her miraculous resurrection. Bet you don't remember him, though.