John Maguire: A salty comedy with Jessie Buckley starts strong before lapsing into confused cosiness

A bracing corrective to the crinoline and consumption line of polite British period dramas, director Thea Sharrock’s Wicked Little Letters takes a true story of smalltown English spite from a century ago and gives the game Olivia Colman and Jessie Buckley a chance to turn the air blue with the kind of bad language that would curl your grandmother’s hair.

An early example of trolling from a blessed era before social media, this salty comedy ...