I'm only 23 and I wasn't around 20 years when people tell me Jessops for more for the professional photographer as well as enthusiasts. Currently it is easy to tell from looking in their shops their market is now the enthusiast. Their sales assistants are of a similar breed to those found in large technology stores such as PC World, Comet and now in administration Curries and Dixons.Just to clarify, Currys and Dixons are part of the same retail group as PC World, it was Comet that went into administration, then met its demise.
As for advice in Jessops, it is very hit and miss. You can get some good advice in some shops, but not all of the time and not in all shops. I once found myself advising the sales assistant to help her with her college course and future career choice.