In November 2015 , it was announced that an RAF A330 MRTT would be refitted to carry government ministers and members of the Royal Family on official visits . The refit would cost £ 10m but would save around £ 775,000 annually compared to the current practice of chartering flights . The aircraft , nicknamed " Cam Force One " by some in the media , will be fitted with 158 seats . The aircraft entered service on 6 May 2016 , with the then Prime Minister David Cameron making his first flight on it to visit the 2016 Warsaw summit
2016 Warsaw summit
2016 Warsaw summit
Airbus A330 MRTT