The Direct Democracy Campaign:
http://www.homeusers.prestel.co.uk/rodmell/index.htm
This web-site puts the case for the use of referenda:-

"20th century democracy meant a vote once every few years for MPs and Councillors who then took all the decisions for us. In the 21st century we can do better than that.
The aim of the Direct Democracy Campaign is to improve the democratic process in the United Kingdom through the introduction of a system of binding referendums, whereby either citizens or their elected representatives may launch public votes to bring in new laws and policies, or to alter, or remove existing ones."