http://www.theguardian.com/politics/2014/oct/13/general-election-2015-tv-debates
This is pretty vital for any of us all. There are several petitions out there but the one gaining most traction (about 200 a minute) is this
https://you.38degrees.org.uk/petitions/invite-all-small-parties-to-join-the-election-television-debates
RegardsAndy Chyba