 The "Mirror"/"Guardian" investigation also alleged that police spoke to Cummings regarding a breach of lockdown rules.On 23 May, Durham Constabulary said that it was Cummings's father who had contacted them, instead of them contacting and speaking to Cummings, and that they had discussed, by telephone, matters relating to security.Following publication of the reports, the SNP leader in Westminster, Ian Blackford and the acting leader of the Liberal Democrats, Ed Davey, called for Cummings to resign if the allegations were to be confirmed, while Labour said 10 Downing Street needed to provide a "very swift explanation" for his actions.