David Clarke and Andy Roberts are regular FT contributors and long-time researchers of assorted fortean phenomena.

This is our Top Ten list of ‘classic’ unresolved UFO cases, incorporating our two ‘best’ cases, and reflecting our bias towards UK incidents that we have personally investigated or researched:

1. RAF Lakenheath-Bentwaters. A complex series of anomalous radar ‘sightings’ both from the ground and the air over East Anglia on the night of 13–14 August 1956 ( see FT213:28–32). This case sums up the UFO mystery: partly resolved, but leaving many technical and human questions unanswered.

2. RAF Farnborough, Hampshire. A close-range sighting of a ‘flying saucer’ by RAF test pilot Stan Hubbard in August 1950, followed by a multi-witness report of a similar UFO at greater distance by a group of RAF personnel.