Ok I’ve found a sort of cover of context:
Tier 4 restrictions may be in place for a “couple of months”, the Health Secretary has said, because keeping the new coronavirus variant under control until the vaccine is rolled out will be “very difficult”.
In England, Boris Johnson effectively cancelled Christmas for almost 18 million people in London, south-eastern and eastern England as the region was put into a new two-week lockdown from Sunday.
Matt Hancock said infections in the areas placed under Tier 4 have “absolutely rocketed in the last few days”.
"Essentially we have got to get that vaccine rolled out to keep people safe. Given how much faster this new variant spreads it is going to be very difficult to keep it under control until we have the vaccine rolled out,” he told Sky News's Sophy Ridge On Sunday programme.
Mr Hancock added that people can catch the new variant more easily from a “small amount” of the virus.
"It is an enormous challenge, until we can get the vaccine rolled out to protect people. This is what we face over the next couple of months,” he said.
I don’t think his words are equal to tier 4 for months? The challenge is what we face for months.