Can't help you there chap. I only knew of Amazon US or eBay.I'm clearly expecting people to be psychic, it would really help if I was specific in the blade I was talking about!
It was the Schick injectors I was looking for, both in the hopes that they're good and that the injector case is better than the crap parker one I've got. I've bent the thing numerous times and it's pure force that makes it work now!
There's a nifty trick somewhere here about modifying a Proline pack with the key. I think it may have been Mike that showed me @mpf9ret