Yep. The little sign advises same but I don't know if it will be readable off this resized photo. Clearly readable on the original. Powered by a Goblin engine. The stencilling on the airframe is in both French and German.
Powered by a Goblin, not clockwork ?
I've got me coat ............................
There were a number of ex-Swiss Vampires at Cranfield in the mid to late 1980's, and I think at least one is still airworthy, at Coventry (?).