Technically no, just having completed those courses should do - obviously the more the better.
Realistically however, presumably you are a PFA member - so speak to Ken Cragie about what you need to do to become a PFA inspector. Also, since they have about the same number of aeroplanes, and the technology and market is pretty much the same, you'd do well to join the BMAA and also try and become a BMAA inspector.
G