Once the ICSTIS investigation was completed on 26 June 2007, Ofcom handed out a record-breaking fine of £300,000 to Channel 5 for the phone-in scandal. The channel cancelled the show, after 1122 episodes. The Ofcom report found the use of fake winners had begun as an expedient to help the continuity of the live format; as such, fakery was not used frequently until 2007 when with the introduction of the Quickfire format to the viewers' quiz led to time constraints on sourcing contestants becoming more pressing. A system was in place that labelled callers Blue, Red or Green; these represented a caller with a correct answer ('blue'), a caller with a wrong answer ('red') or no winner could be found ('green'), in which case a fake name or staff member would be substituted. Endemol claimed their original intention when using 'green calls' was to select a genuine winner after the show; however, this only happened once. Both Channel 5 management and Endemol UK have subsequently apologised.