Boris Johnson faced stinging criticism from his own MPs after apologising for attending a Downing Street garden party at the height of lockdown last year.
A number of MPs and MSPs across the nation have called on him to resign and, should his tenure as prime minister come to an end, several senior Conservative figures are being tipped as potential successors.
Chancellor Rishi Sunak, foreign secretary Liz Truss and Jeremy Hunt, the former health secretary, are seen as the favourites to take the top job.
Watch the video above for Lucy Fisher’s verdict on the runners and riders.
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