Latest updates: PM says people should be ‘extremely cautious’ about timetable of return to classrooms after February half-term

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1.12pm GMT

The Metropolitan police have said Londoners are “increasingly likely” to face fines in the new lockdown. In a statement explaining its intention to adopt a slightly stricter approach to enforcing the rules than has applied in the past, it says:

Although officers will still apply the 4 Es approach of engaging, explaining, and encouraging – only then enforcing, the Met has issued refreshed instructions to officers to issue fines more quickly to anyone committing obvious, wilful and serious breaches.

In practice this will mean that all those attending parties, unlicensed music events or large illegal gatherings, can expect to be fined – not just the organisers of such events. Similarly, those not wearing masks where they should be and without good reason can expect to be fined - not reasoned with.

1.08pm GMT

Johnson says some of the individual parts of the lockdown package are not susceptible to “iron logic”. But cumulatively they are there to protect the public.