How many vaccinations are needed to end lockdown?

<div>The government has announced that 23 per cent of over 80s in England have now received their first dose of the Covid vaccine. With Boris Johnson and Matt Hancock aiming to give 13.5 million people the jab before the middle of February, will that be enough to end lockdown restrictions? Cindy Yu speaks to Katy Balls and James Forsyth.</div>