On Wednesday 26 May Dominic Cummings, Boris Johnson’s former senior adviser, is due to appear before the health and science committees to answer questions on the government’s handling of the Covid-19 pandemic.
Over the weekend Cummings published a rambling thread of nearly 60 tweets laying out a series of accusations against former government colleagues including senior ministers. If he produces evidence for the most damning of these claims during his select committee appearance, the consequences for the government could be grave.