De Havilland Comet C2 XK699 "Sagittarius" was unveiled as RAF Lyenham's gate guardian by HRH The Princess Royal on the 22nd June 1987.
These photos of XK699 were taken about 4 weeks before the unveiling.
With the closure of Lyneham in 2012 the airframe was scrapped - possibly the nose section was saved and moved to Boscombe Down.