British royals blew about $10 million last year -on travel.
Buckingham Palace accounts - published on June 27 - showed a $905,246 increase in royal expenditure on travel from the previous financial year.
Prince Charles, the heir to the British throne, left taxpayers with a bill of more than $144,000 for a private flight from Scotland to Saudi Arabia, while Queen Elizabeth II's flight to the Commonwealth Games in Australia cost more than $500,000.
Charles and wife Camilla's tour of the Middle East cost about $550,000 in charter flights.
The family spent a total of about $4 million on helicopters over the year.
Other expenses to come under fire include the Royal train, which cost just over $1 million and was used less than 20 times.
Labour MP Ian Davidson - a member of the public accounts committee - has queried whether the train is justified.
He also noted the need for greater scrutiny of expenditure.
He was quoted in Britain's Daily Mirror newspaper as saying: "We need to look at whether these travel costs are necessary."
Alan Reid, Keeper of the Privy Purse, who is in charge of the queen's accounts, is quoted in Britain's Daily Mail newspaper as saying: "Our key aim is not to try and achieve a low budget monarchy. We want to create a high quality, efficient and value for money monarchy. The rise over the past four years in the cost of keeping the royal family is less than the increase of loaf of bread or a pint of milk."
Meanwhile, according to the report, the Queen costs each taxpayer about $112 a year - and the sum has reportedly gone up by 4% since last year.
According to BBC website, the increase has been blamed on additional security, employed by Buckingham Palace, following a line of safety breaches.
In 2003, a comedian - dressed as Islamic fundamentalist Osama Bin Laden - managed to illegally enter Prince William's 21st birthday party by climbing a palace fence.
In January this year, a tabloid reporter managed to obtain a job as a footman at Buckingham Palace, by using fake references.
The report also revealed Charles earns about $25 million a year and pays about $5 million in taxes.
The Prince of Wales revealed his financial situation for the first time ever - in a bid to become more "transparent and open" about the Palace's spending.
According to the report, the heir to the British throne had his income increased by about $1.4 million last year, while his tax only saw an increase of $60,000.











