Le Prevo is not a LARP supplier but a UK based leather and leather accessory supplier.
I have personally used them for a number of years and can say that their customer service and inventory are both excellent.
They supply both natural vegetable tanned leather and dyed through leathers by the hide, plus various other leathers like chamois, pig skin and limited edition printed skins (crocodile effect for example).
They also supply leather working tools, dyes, stamps, buckles, rings, studs and everything else related to leatherworking.
Le Prevo do deliver to Europe, and at a reasonable rate. USA and other countries would need to inquire direct with Le Prevo.
All in all, Le Prevo is an excellent choice for the budding or experienced leatherworkers alike to go to for their material needs.