It's being reported the British Prime Minister's official plane was used for what's being described as a 'boozy jolly' over the UK.
Civil servants are said to have been on board for the 700-mile trip.
The Sun newspaper's alleging it cost £50,000 and included a 'fancy meal'.
A statement on behalf of the British government says the aircraft was 'legally bound' to undergo a 'maintenance' journey, to comply with aviation rules.
