Hairyplane,
I can recall seeing G-AFBS cartwheeling on arrival at Blackbushe in the '60's. Believe it may have have at some time been owned by comedian Dick Emery.
Also in the sixties, I discovered another Hawk Trainer (G-AKKR) in the hangar at a private strip at Godalming, (Stilemans, Munstead?) later to be seen again in the Manchester Air & Space Museum. At the time it belonged to the wife of the owner (Mr. Jones?) of Cessna 310 G-APNJ, now at the engineering college at Shoreham.
My last sighting of a Miles was of RG333 at Duxford in 2001 in formation with a DC-3. The Duke of Kent had inaugurated a new exhibition in the Army Museum and the Messenger was on the programme complete with invasion stripes.
Thought this all might be of interest. Can supply dates if it would help further.