
Source: http://www.newtons-apple.org.uk/
Newton’s Apple is “the only neutral and non-partisan UK charity with a specific focus on science policy for the public benefit. The organisation aims to improve the process by which science is fed into policy, and the ways in which Government, businesses, charities and other bodies analyse, evaluate and use science to inform better policies”.
They run workshops for scientists about policy (you can view the webcast videos linked from this page) and have several booklets for download about science & policy-making and a directory of useful science policy websites.