Calculating social returns

According to the FT this morning the Government is going to have a crack at developing a way of measuring social returns. Cabinet Office minister Phil Hope is unveiling the idea in a speech today at this conference. As of now there is nothing on the Cabinet Office website, but I'll post it up when there is. Notably the FT piece (on page 2, I can't link to it currently for techie reasons) makes the link with SRI. But I'm not clear if this is a way of measuring the benefits of social investing in a broader sense, rather than providing more data for SRI folks.