The Decathlon would be my choice too, CAA airworthiness have assisted several times over the years, IIRC there was a modified Yak, and I once flew a PA28-140 modded for hand controls. The Yak was CAA permit and the PA28 had a PT Cat C of A and belonged to a charity.
The guys at Thame Glider site may have some ideas, they do a lot of training with disabled pilots.
SND
Last edited by Sir Niall Dementia; 21st October 2018 at 14:32.
Reason: Worms and smelling