Once upon a time you knew exactly where you stood with the TV channels and drama. In the 70's the BBC did costume dramas such as Poldark (complete with shirts), The Onedin Lineand The Duchess of Duke Street; ITV meanwhile did tough crime and action dramas such as The Sweeney, The Professionals and The New Avengers. Now it's all changed. Post Downton, the BBC is concentrating on tough dramas such as Happy Valley (plot spoiler: it’s not very happy in that valley), The Missing (plot spoiler: it doesn't work out well) and The Night Manager (plot spoiler: anyone could die at any point and probably will). Meanwhile ITV has really dusted down the dressing-up box and has released Houdini and Doyle, Doctor Thorneand Grantchester on us.