Children and pirates and spies, oh my! I was dreading this when I read that Arthur Ransome’s real life inter-war intelligence activity was going to be integrated into the classic story of children messing about in boats on holiday in the Lake District. Yet it works a treat, commencing with a train sequence that’s not quite worthy of Hitchcock, when rude Rafe Spall intrudes on the Walker children while escaping the attentions of Andrew Scott and his Russian Friend; he shows up on a houseboat when the adventurous children are desperately trying to persuade mother Kelly Macdonald to allow them sail to what they proudly christen Walker Island, where they encounter rival sailor girls and much, much more besides. This works up a head of steam and treats family tensions, sibling spats and pirate – and real – spying with due seriousness. Ransome hated the 1962 BBC version; I grew up with the 1974 adaptation. Writer Andrea Gibb and director Phillippa Lowthorpe do a quietly impressive job. Quite charming.