Labour leader Sir Keir Starmer will be investigated by police over allegations he broke lockdown rules last year following receipt of “significant new information”, Durham Constabulary said.

Starmer has strongly criticised Prime Minister Boris Johnson over ‘Partygate’.

The Labour leader has come under pressure since footage emerged of him drinking a beer with colleagues in April 2021 in Durham during campaigning for the Hartlepool by-election.

Sir Keir this week said he wanted to focus on the cost-of-living crisis and not Conservative “mudslinging”.

At the time of the alleged gathering, non-essential retail and outdoor venues including pub gardens were open but social distancing rules, which included a ban on indoor mixing between households, remained in place.

Police issue statement over ‘significant new information’

A police statement on Friday afternoon said: “Earlier this year, Durham Constabulary carried out an assessment as to whether Covid-19 regulations had been breached at a gathering in Durham City on April 30 2021.

“At that time, it was concluded that no offence had been established and therefore no further action would be taken.

“Following the receipt of significant new information over recent days, Durham Constabulary has reviewed that position and now, following the conclusion of the pre-election period, we can confirm that an investigation into potential breaches of Covid-19 regulations relating to this gathering is now being conducted.”

Prime Minister Boris Johnson, his wife Carrie Johnson, and Chancellor Rishi Sunak are among those to have already been fined for breaking Covid laws.