I am a Generator Partner of Good Energy, who have introduced a Renewable Heat Incentive for customers with solar thermal. Their HotROCS scheme pays 4.5p for each unit of heat energy you produce. Contact Good Energy and quote Generator Partner Code GP062.
I only supply and fit British-manufactured panels. I believe this to be both ethical and green. I have certainly found them to be high quality, dependable and robust.
Links to my suppliers can be found on the right.