Prime Minister Boris Johnson says it’s “inevitable” that there will be a risk of increased Covid transmission with millions of children returning to school in England.

He explained that reopening schools could be done now because a proportion of the population had been vaccinated.

However, he warned that we must be “very, very cautious” and said that the government would be led by data, not dates.

Read more: First day back at school has ‘gone well’, say heads