Any new chemical for industrial or cosmetic use is tested on animals. So any company producing new "magical" ingredients is testing them on animals. And most of the big companies test the finished product, too - often abroad to get around the cosmetic testing ban.
Do co-op do an own brand razor? They don't test products or ingredients and have a fixed cut off date.
Animal Aid sell some razor blades here - not cheap though:
http://www.animalaidshop.org.uk/household.htm
Lots of other good stuff on there too.