Thanks for the replies, fellas - much appreciated. I didn't stop to think before I posted.
Buzzbomb - the base is the fuselage and inner wing panels of the old Airfix Meteor, a pair of engine bells from an
Airfix 'Star Cruiser One' kit, and a tail from a much cut down and carved up wingtip ( it looked symmetrical enough to serve. )
from a Heller Javelin. The engine pods on the wings are rocket pods from the 1/48th Su-24 I won in our first contest.
Finally, the spine was one of the gun pods from the 1/24 Harrier, whcih have been kicking around my spares box for a
good quarter century.