It’s BBC costume drama time for Doctor Who, and don’t we just love a Doctor in a top hat. We love Doctor in a deep sea diving suit even more! When we left the Doctor and Bill at the end of last week’s episode they had just encountered an elephant on a frozen Victorian Thames. This coming Saturday, in “Thin Ice”, written by Sarah Dollard (“Face The Raven”), we find out what’s hiding beneath the ice. Our money would have been on the Ice Warriors, except we know they’re coming later in the season in Mark Gatiss’s story, “The Empress Of Mars”. The photos include images of Peter Singh as the Pie-Man. And a blue fish.