A military plane used by Boris Johnson and members of the royal family is being repainted red, white and blue to match the colours of the Union flag.

Boris Johnson has previously questioned why the plane is grey, and said as foreign secretary that he would like to have a “Brexit plane” to help him travel the world and promote the Government’s vision of global Britain.

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The grey RAF Voyager jet is receiving a pre-planned makeover at an airport in Cambridge, with red, white and blue expected to be used.

Sky News reported a defence source saying the paint job sounded like something “from Austin Powers”.

He complained in 2018 that the RAF Voyager jet, which is shared by the Prime Minister, senior Cabinet members and the royal family, “never seems to be available”.

Speaking to the Press Association, an RAF source said that speculation that such a plane would have an “appropriate paint scheme based on the Union flag would not be incorrect”.

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A spokesman for the Royal Air Force said: “An RAF Voyager is currently in Cambridgeshire for pre-planned works.”