Under-fire Downing Street aide Dominic Cummings is weighing up quitting later this year, it is claimed.

The Prime Minister's advisor is facing calls to resign after it emerged he had taken his family to Durham during lockdown.

On Easter Sunday he took his wife and four-year-son to Barnard Castle, despite government guidelines clearly telling Brits to stay at home.

Boris Johnson has been heavily criticised for failing to sack Cummings - who claims he did nothing wrong.

Earlier today Durham Police said he had broken lockdown rules, but said no further action would be taken against him.

According to the Daily Mail, Cummings could be out the door in six months.

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Dominic Cummings is reportedly weighing up quitting after Brexit

But it won't be political pressure which will see him walk away from Number 10 - he's likely to quit after the UK cuts ties with the EU, the newspaper reports.

A source said: "He will stay in his job if it seems worthwhile and [he] can improve things – otherwise he probably won’t."

Cummings' behaviour has been criticised by politicians from all major parties, but Mr Johnson has said he wanted to move on from the topic.

Boris Johnson has been heavily criticised for standing by controversial advisor Cummings

In an extraordinary press conference on Monday Cummings, who said he had not considered resigning, admitted it was "reasonable to say that other people would have behaved differently" - but said there were exceptional circumstances to justify the trip.

He denied breaking the rules, and claimed he had not broken the "spirit" of the rules, saying: "I did what I thought was the right thing to do."

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Speaking at a grilling in the garden at Downing Street, he said: "I don't think there's one rule for other people, as I said I knew what the guidance was, it talks about exceptional circumstances with small children, and I believe I behaved reasonably and legally."

He conceded that he had not investigated childcare options in London - saying it was "not reasonable" to ask a friend to look after his four-year-old son if he and his wife became too ill to care for him.