Although Tengbo denied claims he was a spy, with the prince having insisted he had ceased all contact with him once suspicions were first raised, their once close friendship turned heads, with the duke, 64, pulling out of last year’s Royal Family Christmas plans at Sandringham as a result.

Andrew, who was poised to leave the Royal Lodge after his brother King Charles cut him off financially, is trying to pinch a few pennies by developing a green thumb. “It is in a shocking state,” Todd Longstaffe-Gowan, the Historic Royal Palaces gardener, told the Daily Mail of the mansion’s worse-for-wear grounds.

King Charles is said to be at loggerheads with his younger brother over the future of Royal Lodge, with the monarch wanting the Duke of York to move to Frogmore Cottage

According to PR expert Mark Borkowski, Prince Andrew's apparent isolated life could be down to his lack of public opportunities, following his stepback from royal life.

King Charles and Prince Andrew remain in a bitter row over the future of Royal Lodge, with the monarch having withdrawn funding for £30million mansion

British royals expert Hilary Fordwich claimed that King Charles III is determined to keep his scandal-ridden brother on the sidelines as he prioritizes the crown and its senior working members.

Prince Andrew is facing a lonely life at his Royal Lodge home as he is banned from many royal events and his brother King Charles is desperate for him to leave

The disgraced Duke of York is reportedly trying to hide in the shadows at his home in Royal Lodge in the Windsor grounds.