Detective Superintendent Stephen Ratcliffe said this was "a gang of experienced criminals who had been the subject of an investigation by the special projects team at the Metropolitan Police for a couple of months before this robbery."
More top news
Patricia Al from ran up the monster debt after using her O2 mobile in Turkey.
The position, posted on the British Monarchy website, pays £16,000 a year for 20 hours a week.
Police are hunting for a passenger seen on CCTV after a 15-year-old boy was attacked and left with a punctured lung.