Case data from before and after the third national lockdown shows the impact the measure has had - or not. As the end of 2020 approached, infection rates in England reached new highs.
Whether due to people bending the rules over the festive period or the expected consequence of the cold weather forcing socialising inside, cases climbed steadily throughout December.
The alarmingly high number of positive tests being returned led Boris Johnson to call another England-wide lockdown, which came into force on January 5.
Almost three weeks on, the impact the tighter restrictions have had can be seen in the local coronavirus case rates. The list below shows the current case rates for every local authority region in England, while next to it
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