Thanks for the help everyone. I might also be sleeping outside/in tents footflaps, so was worried about being warm.
As far as environmentalism is concerned, well everything we do/make has an impact on the environment. Rab sleeping bags aren't really much better, the pertex material if I understand correctly, is not made in Europe either. And yes I use the internet, but not that much, and our electricity is partly generated by us. We all share a computer. Taking a bus is more environmentally destructive than not going to Copenhagen, but then dying is more eco-friendly than being alive, so what are you gonna do?
At the end of the day, I own so little stuff and have much less impact on the environment than most so I can take the ribbing. I'm not perfect, and I think most 'soap dodgers' would say the same. That all sounds a little defensive, and I suppose it is, but, you know what, I'm trying.