Scott Mills joined Radio 1 on 12 October 1998, hosting the early breakfast show between 4–6:30am. On his fourth day on the job, he was asked to substitute for Zoe Ball on the Radio 1 Breakfast Show at the last minute, and he has been the regular cover ever since, continuing for Sara Cox, Chris Moyles, Nick Grimshaw and Greg James. In January 2004, he was moved from early breakfast to the 1-3pm slot at weekends. In May 2004 Mills returned to weekday-afternoon programming as a temporary replacement for Cox, who was on maternity leave. When Cox decided not to return to afternoons Mills became permanent host in the drive-time slot with Cox's former co-host, Mark "Chappers" Chapman. The show originally aired from 3–5:45pm, moving to a later 4–7pm slot in a schedule reorganisation later in 2004. Mills remained here, with producer Emlynn Dodd until March 2012.