King Charles was pictured putting on a brave face while leaving church on Sunday as the scandal over his brother Andrew Mountbatten-Windsor continues to rock the Royal Family.  

The monarch looked grim-faced as he walked out of St Mary Magdalene Church in Sandringham following a service this morning. 

Charles, 77, wore a beige overcoat, a blue shirt and a navy and red tie, and was accompanied by a vicar from the 16th-century church.

He seemed to scowl while leaving the service which took place just three days after his brother was sensationally arrested on suspicion of misconduct in public office and held for 11 hours at Aylsham Police Investigation Centre. 

His appearance comes as he faces calls to reveal how much he knew about Andrew’s alleged misconduct prior to the arrest.  

The King issued an unprecedented statement confirming his ‘wholehearted support and co-operation’ with the investigation into Andrew just hours after he was detained on Thursday – with Buckingham Palace understood not to have known the former Duke of York would be arrested. 

But the Mail on Sunday revealed the King was warned as long ago as 2019 that the Royal Family’s name was being ‘abused’ by Andrew’s business associations.

In a bombshell email, a whistleblower appears to have told the Palace that the former Duke had secret financial links to controversial millionaire financier David Rowland, who was abusing his royal links. 

Messages seen by this newspaper also appear to show that Andrew allowed Mr Rowland to effectively join in with his official duties.

The cache of emails threatens to draw Charles further into the crisis, triggered by Andrew’s links to Jeffrey Epstein, and allegations he passed potentially confidential and sensitive documents to the convicted paedophile.

Andrew once told Epstein that Mr Rowland was his ‘trusted money man’. The banker and his son Jonathan joined Andrew on trips he made in his official capacity as a taxpayer-funded trade envoy between 2001 and 2011, visiting places such as China and former Soviet states.

Mr Rowland once gave Andrew’s ex-wife Sarah Ferguson £40,000 to help clear debts and, in 2017, paid off a £1.5million loan for Andrew.

In August 2019, a whistleblower who had detailed knowledge of Andrew’s business dealings with Mr Rowland sent an email to Charles, then Prince of Wales, via the royal lawyers Farrer & Co, warning of ‘David Rowland’s abuse of the Royal Family’.

It said: ‘HRH the Duke of York’s actions suggest that his Royal Highness considers his relationship with David Rowland more important than that of his family.’

The whistleblower then sent a second email to Mr Rowland himself, copying in Clive Alderton, Charles’s private secretary, and Mark Bridges, the late Queen’s solicitor at Farrer & Co.

That message said: ‘The evidence provided unequivocally proves that you have abused the Royal Family’s name.’

On Thursday, King Charles said he would grant police access to all files and records necessary for any investigations into his disgraced brother. 

The arrest came after Thames Valley Police said it was ‘assessing’ reports that Andrew shared confidential trade reports and investment opportunities to paedophile Jeffrey Epstein in 2010 and 2011 when he was the UK’s special trade envoy in Asia.

Andrew was questioned for 11 hours straight following his arrest and was pictured slumped in a Range Rover attempting to hide from cameras on his way out of Aylsham Police Investigation Centre.

He was taken from Wood Farm on the royal Sandringham estate in Norfolk where he was placed after he was evicted from his Windsor residence Royal Lodge by King Charles earlier this month.

Police searched Wood Farm and are now searching the seven-bedroom mansion Royal Lodge as part of the investigation.

Police now have a wide leeway to broaden their investigation if they find any other crimes when combing the former prince’s files and possessions and will ‘follow the evidence’, The Observer reported.

Andrew, who was kicked out of Royal Lodge earlier this month, reportedly ranted ‘I’m the Queen’s second son, you can’t do this to me’ when he was forced out of the estate.

The former Duke of York left the 30-room Windsor mansion where he had paid ‘peppercorn rent’ for decades under the cover of darkness at the start of this month.

It is understood King Charles had become increasingly concerned about the allegations against his brother, who was arrested this week on suspicion of misconduct in a public office.

Andrew, however, reportedly did not to want to leave the property and move to Wood Farm on the Sandringham Estate in Norfolk, where he currently resides.

Days earlier, he had been pictured cheerily greeting members of the public as he rode his horse, with sources saying the images were likely the ‘final straw’ for royal courtiers looking to kick him out of Royal Lodge.

The revelations about his reluctance to move house come as a senior MP called for Andrew to be investigated for treason over accusations he passed confidential information to Epstein.

Ex-Security Minister Tom Tugendhat is demanding a special committee is set up that would have the power to summon witnesses and demand documents.

The last person to be convicted of treason in the UK was Jaswant Singh Chail, who broke into Windsor Castle with a crossbow on Christmas Day 2021 in a plot to kill the late Queen.