"A big, loud, funny romp" is how Chris Chibnall set up Dinosaurs on a Spaceship for me last year, and it's amusing to look back now and see the Broadchurch creator having such a jolly. "The fabulous thing about Who is you can have a collision of characters and put them together in the extraordinary situation."

Thus we have a big-game hunter (Rupert Graves), Rory's travel-phobic dad (Mark Williams) and Nefertiti helping the Doctor save the 'saurs. I predicted then that David Bradley would be cast as first Doctor William Hartnell in the forthcoming "origins of Who" drama - see him here relishing the role of wicked buccaneer Solomon.