Operation Mainbrace UFO Encounters 1952

September 1952: Operation Mainbrace - many UFOs were observed. On 19 September at 11am a silver disc-shaped object followed a Gloster Meteor returning to RAF Topcliffe, and seen by observers on the ground. It rotated whilst hovering. It then travelled towards the west at high speed. On 21 September, six RAF planes followed a spherical object over the North Sea. It followed one of the planes back to the base.

Link - http://en.wikipedia.org/wiki/UFO_sightings_in_the_United_Kingdom#1950s

"At the time immediately I didn't feel frightened. I did subsequently feel that we were looking at something that really we shouldn't be seeing. And I remember being told on landing that I looked fairly shaken, almost as if I had seen a ghost...."

Air Commodore Michael Swiney O.B.E. (RAF Retired)

"Flight Lieutenant M.J.E. SWINEY, instructor, and Lieutenant D.CROFTS, R.N., student, sighted three mysterious, 'saucer-shaped objects' travelling at high speed at about 35,000' whilst on a high level navigation exercise, in a Meteor VII. Later, A.T.C.C. Gloucester reported radar plots to confirm this, but Air Ministry discounted any possibility of 'extra terrestrial objects."

Link - http://drdavidclarke.co.uk/secret-files/operation-mainbrace-ufos/