I think that Model was referred to as "PathFinder"

Peter Twydell wrote:
In article , Mycroft
writes

Yes the MK1 Raindeer with a service ceiling of 3ft & a max cruising speed of
aprox 15 knots is the best of it's type in the world. LOL!

Myc



But it needs special fuel and the emissions are disgusting.

ISTR there was a special model with an anti-collision beacon in the
nose.