Andrew Mountbatten-Windsor's mystery facial bruise appears to have healed, as the shamed former prince broke cover ahead of Trooping the Colour.Fresh pictures taken yesterday show the 66-year-old near his Sandringham home looking noticeably different after previously being photographed with a large purple mark across the right side of his face.The bruising, which had covered his right eye and much of his cheek, appears to have faded completely in the latest images.The development comes as the rest of the Royal Family prepare to gather for Trooping the Colour today, one of the biggest events in the royal calendar celebrating the King's official birthday.Come rain or shine, this year's Trooping the Colour is taking place under a dark cloud - even if the royals try to continue with 'business as usual'.Crowds will be treated to the sight of a royal carriage procession along The Mall as the King, Queen and the Princess of Wales, joined by her children, are guarded by a Sovereign's Escort provided by the Household Cavalry Mounted Regiment. Andrew has not joined the Trooping the Colour celebrations in recent years and is not expected to attend today's proceedings, which are set to feature senior working members of the Royal Family on the Buckingham Palace balcony.The pared-back approach to public appearances has continued under the King's reign, with the spotlight firmly on those carrying out official duties.The daughters of the disgraced former prince, Princesses Beatrice and Eugenie, will also not attend today's Trooping the Colour, which they last attended in 2022. The bruising, which had covered his right eye and much of his cheek, appears to have faded completely in the latest images Fresh pictures taken yesterday show the 66-year-old near his Sandringham home looking noticeably different after previously being photographed with a large purple mark across the right side of his faceInstead, the group will consist of working royals including the Prince and Princess of Wales, the Princess Royal and her husband Vice Admiral Sir Timothy Laurence, and the Duke and Duchess of Edinburgh.They will be joined by the Duke and Duchess of Gloucester and the Duke of Kent, now the oldest working royal at the age of 90, while the King's estranged son Prince Harry and his wife Meghan Markle, who live in Montecito, California, will also be notably absent.Queen Camilla was appointed Colonel of the Grenadier Guards after disgraced former prince Andrew Mountbatten-Windsor returned the coveted military title to the late Queen in January 2022.He was stripped of his honorary affiliations with the armed forces after calls from 150 veterans for the then-monarch to remove his eight British military appointments.The former Duke of York sparked concern last week when he was spotted with a huge mystery bruise across his face near his Sandringham home.It is unclear how or when the former Duke of York, 66, obtained the mark.However, a source close to Mr Mountbatten-Windsor told the Daily Mail that the bruise is not a 'cause for concern'.They added that there had been 'no drama' but declined to give further details due to medical confidentiality.Doctors told the Mail that patients can get bruises like this if they are on blood thinners, when even very minor knocks can turn into something that looks nasty.They could also be the result of facial surgery, or if the patient 'has been punched in the face'.But they stressed it was impossible to say which of these, if any, is the case with Mr Mountbatten-Windsor.Mr Mountbatten-Windsor remains under police investigation after he was arrested in February on suspicion of misconduct in public office.He has rarely been seen in public since a security scare at Sandringham last month. Andrew has not joined the Trooping the Colour celebrations in recent years and is not expected to attend today's proceedings The disgraced royal had been walking the late Queen Elizabeth's corgis when he was approached by a balaclava-clad man who allegedly ran towards him.The suspect was apparently agitated and shouted at him from 50 yards away.Mr Mountbatten-Windsor, who was with a bodyguard, ran back towards his own car and drove off at speed.He was said to have been left 'shaken' by the incident and was asked for a statement, as was his personal protection officer.Meanwhile, Mr Mountbatten-Windsor has also been facing fresh allegations relating to his friendship with the late paedophile financier Jeffrey Epstein.It was revealed last week that police were investigating claims that he allegedly behaved inappropriately towards a woman who was working as a waitress at Royal Ascot.The claim, dating back almost a quarter of a century, is now being examined by detectives as part of a much wider investigation into Mr Mountbatten-Windsor over alleged misconduct in public office.