Enoch Powell has been in many minds this month. It’s the 50th anniversary of his famous ‘Rivers of Blood’ speech and I took part in a BBC radio programme discussing this — and hearing the speech itself read superbly by the actor, Ian McDiarmid.

The small campaign against the very broadcasting of the speech fizzled out — not least, I think, because the ghastly text does Mr Powell no favours, and many of us who had never read it in its entirety were shocked not only by its tone but by its careless inaccuracy and faltering logic.