In 1998, Grossman decided to take a sabbatical and the series was placed on hiatus in his absence. He returned to present the 1999 series but left the show in 2000. In 2001, the show underwent a makeover in response to declining ratings. It was moved from its traditional Sunday afternoon slot on BBC One to a Tuesday night slot on BBC Two and the format of the show was modified. The celebrity judge was no longer included and the contestants had to cook two courses in 90 minutes, which was extended to two-and-a-half hours for three courses in the final episode. As an additional requirement, each contestant had to use the same key ingredient in each course. In October 2000, Grossman quit in anger over the proposed changes and was replaced by chef Gary Rhodes, who had previously presented "MasterChef USA". Rhodes' advice to contestants was more critical than Grossman's and the show received acclaim for its more serious tone, which would later inspire the "MasterChef Goes Large" format and other cooking competitions like "Hell's Kitchen". However, the new version of the show did not revive ratings as hoped and was cancelled by the BBC after the first series. In 2005, executive producers Franc Roddam and John Silver, along with series producer Karen Ross, radically overhauled the show's format and introduced a new series. It was initially titled "MasterChef Goes Large", but the name reverted to "MasterChef" in 2008. The new series is judged by John Torode and Gregg Wallace, with voice-over narration provided by India Fisher. The show proved very popular and became one of BBC Two's more successful early-evening programmes, leading to an announcement by the BBC in 2009 that it would be promoted to BBC One. Each series airs five nights a week for eight weeks. During the first six weeks, the first four episodes of each week are heats and the fifth episode is a quarter-final. Six contestants enter each heat and the winner becomes a quarter-finalist. At the end of each week, the four quarter-finalists compete and a semi-finalist is chosen. After six weeks, the six semi-finalists compete in the final two weeks. In 2010, the judges were given more flexibility, allowing them to advance more than one contestant to the quarter-finals or, in one instance, none at all. Series 7 of "Master Chef" featured auditions with a format similar to "The X Factor", in which hopeful chefs cooked in front of the judges to secure a spot in the competition.