Here are two Covid questions, thrown up by the rate at which the Indian variant is infecting parts of the UK.

First, does it show that the traffic light system, which was designed to prevent the UK from importing new strains and variants from abroad, is unfit for purpose? The delay of one to two weeks in moving India from the amber to red category – which I’ve been banging on about for a month – is relevant, and looks like a serious government mistake.