★★★

There’s little hiding the glee with which Olivia Coleman chews through her share of the expletives abundant in Wicked Little Letters. A renowned potty mouth unleashed. Astonishingly, this new British comedy, from Me Before You director Thea Shamrock, is based on entirely true events. Though the script is that of comedian Jonny Sweet, the crudities come lifted from poison pen letters sent in 1920s Littlehampton. It’s like a ‘foxy ass’ Downton Abbey, had Lady Grantham slipped in the occasional f**k at high tea.