Well, this is a somewhat fraught topic and I certainly don’t intend to give out advice regarding how you should use your money in a greener way. Here’s what I’ve done, hopefully there’re some useful/interesting pointers:
Cash ISA with Co-operative Bank – Reasonable balance between social and environmental policy and interest rate 
Pension – General mixed share fund. It’s too big a deal to consider experimenting with my pension at the moment…
Investment Trust – I toyed with the idea of a self-select share Maxi-ISA but that can wait. For simplicity and greater spread of shares I bought into the Merril Lynch New Energy Technology Ltd trust.
My mortgage is a regular one. I might consider switching to a green mortgage but early-on (I bought my first house 4 1/2 years ago) monthly payments were the critical factor. Now it’s the pesky redemption penalty that’s the critical factor…
