Liz Truss will join King Charles on tour of the UK during national mourning

Liz Truss will accompany King Charles III on his tour from the UK next week as he leads the nation in the "significant moment" of mourning the late Queen.

The Conservative Prime Minister and the King will travel to Scotland on Monday morning, followed by of visits to Northern Ireland on Tuesday and to Wales on Friday.

Ms Truss will support Charles by joining him at "retreat services" across the country during the 10-day mourning period, said Downing Street.

The Prime Minister's official spokesman said this was not a formal or constitutional role, but had been accepted by No 10 and the Buckingham Palace.

"It's not a obligation, but the Prime Minister feels it is important to be present for what is a signing nificant moment of national mourning in the UK," the No 10 spokesman said. p>

Ms Truss will also be present when Charles travels to Parliament on Monday morning for the presentation of addresses ceremony with MPs, peers and members of the legislatures of Scotland, Wales and Northern Ireland North.

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The new Prem First Minister, his ministers, opposition party leaders and other senior officials, swore allegiance to the new king as parliament convened for a rare Saturday sitting.

The King also held an audience with the new Prime Minister and his cabinet, followed by a separate audience with Sir Keir Starmer, Sir Ed and the leader of the SNP in Westminster, Ian Blackford.

Meanwhile , former Labor Prime Minister Gordon Brown said Britain could look more like a "Scandinavian monarchy" - saying he expected Charles to carry out his duties more informally as part of a slimmed down royal family.

Praising the Queen, Mr Brown told the BBC's Laura Kuenssberg 'she actually knew better than I did what was going on in the country - it was quite embarrassing ."

The former prime minister said he could have been "in endless debates or cabinet meetings o u something like that" as he said the Queen kept updating herself by watching TV and "getting notes from her secretaries".

David Cameron revealed how he had to to apologize to the Queen after microphones picked up the then Prime Minister recounting how the Queen was 'purring' over the phone when he informed her of the result of Scotland's 2014 referendum.

< p>Mr Cameron told the BBC's Sunday with Laura Kuenssberg: "It was a very frank and comprehensive apology given very quickly at the start of a hearing. I think that's all I should say."

Mr Cameron also said he thought it was "completely right" that Charles wrote to ministers with his point view when he was Prince of Wales.

The former Prime Minister said the so-called 'spider memos' from letters to ministers on a range of issues from herbal medicine to slaughter badgers - published in 2015 after a long legal battle - should have remained private.

"I never felt that he was trying to influence me inappropriately in a...