The former finance director of the Prince’s Foundation for Integrated Health, has been jailed for three years for stealing more than £250,000 from the charity.
George Gray admitted taking the money over a two-and-a-half-year period from the charity, which was founded by Prince Charles to promote alternative healthcare and has since shut down.
Gray pleaded guilty last week at Southwark Crown Court to two counts of theft, one of fraud and one of money laundering.
A statement from the Metropolitan Police said Gray, who was on a salary of at least £80,000 a year, had debts of up to £850,000. Police identified 35 transactions from the charity’s account into Gray’s bank account while he worked for the organisation.
He was sentenced to three years for each offence, which he will serve concurrently.
The charity accelerated plans to close after the fraud came to light.
Detective constable Terry Lambert, from the Economic and Specialist Crime Command, said the overwhelming evidence against Gray "gave him no choice but to plead guilty".
"Gray abused his position of authority and took money that he knew he was not entitled to," he said.
A 54-year-old woman who was also arrested in connection with the investigation was released with no further action on 12 May.
A spokeswoman for Clarence House declined to comment.