Not done the FI course but did CPL with Tayside and found them exceptionally good. Sandy is an excellent instructor who I couldn't fault in any way, a view I know is shared by everyone I know who he has taught.
I know two people who have done the FI course with him and their opinion was the same.
Not sure how busy they are right now. Tayflite bent their Arrow so Tayside may well be picking up some extra CPL business.
Cheers
SK