Never heard of them to be honest!
Personally if i were you i would just get some from the shop in arbroath or even better go through to see Neil in forfar (Angus angling).
Just tell him where you are fishing and iam sure he will help you out with a nice selection of fish catching flies.
Failling that iam sure i could rustle you up some flies for the local fisheries round about this area!
I think to start with you are better buying face to face so you know what your buying and what the flies are representing and hopefully someone in a local shop can keep you right.
I dont think you would need to much to make a decent fly box.
Hope this helps