Stumbled upon this earlier and thought it may be of interest to some people:
Very interesting process.
I remember some Cork Oaks (Quercus suber) when I visted Cornwall years ago and am very unsure about how far north these go, does anyone know a Cork Oak near them?
It's OK - I'm not gonna cork it! just interested in distribution and even UK production stands.
And incase your curious about protecting what seems to be a more sustaiable industry than screw-tops, there is a petition too