I know that many of you have recommended Ren Wax for protecting sheaths and blades, but that it was not all that easy to find.
Well, I found it at Lakeland Plastics over the weekend. In the cleaning section with the metals polishes etc. Bit more expensive than on the web, but without the postage costs which I seem to remember were a bit high.
that's a good price for a 200ml tin. I seem to remember it being about £3 - £4 on the web for a 65ml tin. The big 200ml tin should last you 10 years or so.