Warning: if you haven’t seen it yet, the first episode of the much-anticipated Patrick Melrose (Sky Atlantic, Sunday) contains scenes of drug-taking. Further warning: it contains an awful lot of them.

The series is adapted from the five justly celebrated autobiographical novels by Edward St Aubyn, which trace the long-term effects on Patrick of an upper-class childhood in which his psychotic father intersperses horrifying emotional cruelty with regular bouts of rape.