The Swinging City has ground to a halt.

Eerie photos show London looking like a ghost town after the UK capital was forced into strict lockdown over the alarming spread of a new, highly contagious mutation of COVID-19.

Streets usually buoyant with tourists and Christmas shoppers were instead empty, while the typical fight to get a seat on a London Underground train was replaced by a struggle to spot other commuters.

Most dramatically, train stations that had been dangerously packed with people desperately trying to flee the city Saturday night before the lockdown started at midnight were almost completely deserted.

The striking images came as the Daily Mirror newspaper branded Britain the “Sick Man of Europe” amid a mounting number of nations blocking borders to prevent the new strain that Prime Minister Boris Johnson has warned appears to be up to 70 percent more transmittable.