These latest documents are the first containing information written by defence intelligence staff to be made public.

BBC: UFO files show 'close encounter'

Dr Brian Jones, a senior member of the Defence Intelligence Staff who raised concerns about the 45-minute claim will also provide written evidence.

BBC: Iraq Inquiry: Tony Blair is recalled to give evidence

The seven files, produced by the DI55 branch of the Defence Intelligence Staff, contain details of 1, 200 UFO sightings between November 1987 and April 1993.

BBC: MoD took UFO sighting seriously