Boris Johnson’s popularity has soared since the start of the coronavirus pandemic, a survey of the general public has shown.

A poll carried out by YouGov found that 55% of Britons now hold a favourable opinion of the prime minister, compared to just 33% when he took office in December.

By contrast, only 35% of people now hold an unfavourable opinion of Mr Johnson, leaving him with a net score of +20 – his highest rating by some distance since becoming leader.

YouGov data shows that most of the new support comes from voters who didn’t back the Conservatives in 2019.

View photos Boris Johnson issued a series of strict new measures on Monday. (Getty) More

Last week, only one in 10 Labour voters had a favourable view of Johnson, and now it’s a quarter.

Similarly, amongst Lib Dems, 38% now have a positive opinion of him, up from 18% over the same period.

It comes after Mr Johnson announced a series of sweeping draconian measures which will be in place for at least three weeks and will also see the closure of libraries, playgrounds and outdoor gyms, and places of worship.

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View photos London's Trafalgar Square was deserted on the first day of the lockdown. (AP) More

He also threatened police fines for anyone who ignores new measures including a ban on public gatherings of more than two people.

Mr Johnson ordered people to only leave the house to shop for basic necessities “as infrequently as possible” and to perform one form of exercise a day.

The prime minister has previously faced criticism from figures such as former health secretary Jeremy Hunt who said earlier this month that the government’s delay in imposing a lockdown was “concerning”.

View photos Global cases of coronavirus have been rising rapidly. (PA) More

Former Conservative leadership candidate Rory Stewart has also previously criticised Mr Johnson for “just not taking this seriously”.

On Monday night, however, politicians across the spectrum, including those who had been highly-critical of the PM’s response so far, welcomed the tough new measures.

View photos A man outside Morrisons supermarket in Malvern, Worcestershire, the day after the UK went into lockdown to help curb the spread of the coronavirus. (PA) More

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