A plane expected to take the first asylum seekers to Rwanda has been seen at an airfield.
The Boeing 767 was spotted at MoD Boscombe Down on the outskirts of Amesbury, Wiltshire.
Ministers are vowing the flight will go ahead - even if there is just one passenger.
The Boeing is operated by Spanish charter firm Privilege Style and was seen landing at the MoD testing site earlier today.
The company has a permit to fly from Stansted to the Rwandan capital, Kigali, at 9.30pm tonight, according to Civil Aviation Authority records.
The airline has not yet commented on the claims.
The site is managed by QinetiQ, the private defence company created as part of the breakup of the Defence Evaluation and Research Agency (DERA) in 2001 by the UK Ministry of Defence.