It’s not because we don’t find his latest show, History of Railways, deeply fascinating (coal, steam, wheels, um… rails — we’re big fans), but he is so impossibly handsome we simply can’t be expected to concentrate. Dan, son of king of the swingometer Peter Snow, nephew of our favourite jazzy sock-wearing newsreader Jon, and known to his 40,600 Twitter followers as @thehistoryguy, has the kind of chiselled jaw and elegantly tousled hair that make us reach for the smelling salts. It hasn’t gone unnoticed that Dan’s go-to casual blue T-shirt, which on any less of an übermensch would look shabby, delicately clings to his ‘Ooh, have you been working out?’ pectorals (he won the Boat Race with Oxford in 2000 — we looked him up). The fact that it’s teamed with a safari jacket he picked up at Rohan makes us love him even more. This rugged Snowman is a class swot at heart and all the sexier for it. Choo choo!