WK 518 was on ULAS during my time 69-72. Beags ( or Flying Lawyer) might recall that the first part of limited panel Unusual Position (UP) instrument recovery was for the instructor to first do a couple of aeros to "topple the gyros" , obviously tumbling the Artificial Horizon.
He then put the "thundermonk" in to a horrible position, before then giving the standard announcement :
" You have control - recover"
It was great fun.