What are the new three-tier local UK Covid-19 restrictions?

An employee pulls a pint in the Tib Street Tavern in Manchester, England, as UK Chancellor of the Exchequer Rishi Sunak announces the government will pay two thirds of the wages of staff in pubs. Picture: Danny Lawson/PA

A new three-tier system of local lockdown measures for England will be announced by the UK Prime Minister in an effort to curb rising Covid-19 rates.

The PA news agency looks at some of the questions surrounding the incoming system.