I believe Nigel Ogden has a soft spot for this organ and he made a recording on it in January 1994 (In Classical Mood. OS207). At that time, quoting from the sleeve notes, the last time any major work had been done was in 1970 by Jardine and Co Ltd. The organ was cleaned and a moveable detachable console was fitted, along with new electro-pneumatic action to the primary motors.
At the time of recording, the organ was not in the best of health and Messrs Denny and Ginder of Jardines spent a few days patching things up to allow the recording to be made.
Unfortunately I've no later information but this may be of some interest.
Best wishes
PF