By holding a christmas party, because of a "lack of evidence". the prime minister's former spokesperson, allegra stratton, has resigned after appearing to joke about the party, and there are claims of more gatherings at number ten, whilst the uk was in lockdown. iain watson reports. three, two, one... plan b, with its new restrictions in england, is on its way just before christmas. but questions are still persisting over what happened last christmas behind downing street's black door. at a mock press conference, the prime minister's then spokeswoman appeared to be making light of some of the ...