Overview: Norwegian police are investigating claims by Anders Behring Breivik, who has admitted carrying out Friday's twin attacks in Norway, that he has "two more cells" working with him. Steve Rosenberg is in Oslo for us, and we'll be exploring how deeply ingrained the anti-immigrant strain of thinking is in Europe. Then Catrin Nye examines the links between Breivik and the English Defence League (EDL). Jeremy Paxman will be joined live by the EDL's leader Tommy Robinson. And Paul Mason travels to the north east of England to hear a "mea culpa" from former business secretary Lord Mandelson, who admits New Labour didn't get everything right on the economy when they were in office. Lord Mandelson will join Jeremy live in the studio to explain how he thinks Labour needs to change in order to win back power.