I occasionally get enquiries about where to purchase items–like the Fuchs replaceable head toothbrushes I mentioned recently. I live in the U.S. now, and there do seem to be more sources here (it’s the consumer society, right?). But I can recommend a couple of prime sources in the U.K. for environmentally-responsible products:

Out of This World shops, mostly in the north of England
The Natural Collection

I would love to have other suggestions for your favorite European, Australian, and other suppliers.