Nick Grimshaw announced as Moyles replacement at Radio 1

Nick Grimshaw has been handed the flagship Radio 1 breakfast show after Chris Moyles announced on air today that he was bowing out.

Grimshaw - who currently presents five night-time shows each week for the station - will take over in September.

Moyles, the longest-serving breakfast host in the station's 45-year history, shocked listeners with his departure but told them: "I've had the best time of my life."

Grimshaw, who is 27, has been with the station for five years and said he was "super excited" to be given the new role.

The presenter - known to listeners as "Grimmy" - said:

Moyles is said to be now talking with bosses about a new programme for Radio 1 with which he is contracted until the end of next year.

He was already due to take a break to appear as Herod in a touring version of Andrew Lloyd Webber's musical Jesus Christ Superstar.Moyles told listeners he wanted them to hear it from him rather than reading it in newspapers or on Twitter that he was leaving his "dream job"."We're going to leave the breakfast show. I just want to give you a heads-up and tell you that we're going to wrap it up," he said.

Celebrities took to Twitter to react to the announcement:

Moyles, the self-styled "saviour of Radio 1", has hosted the breakfast show since January 2004. The presenter has been with the station for 15 years, and fronted the drive-time show before stepping up to the flagship morning programme.Radio 1 controller Ben Cooper said:

During his tenure on the show, Moyles set a new record for the longest radio broadcast.The 52-hour show - co-hosted with sidekick "comedy" Dave Vitty - raised £2.4 million for Comic Relief.

Following the announcement of Nick Grimshaw's appointment, Radio 1 presenters congratulated him on Twitter:

Moyles took over the mantle as the station's longest-serving breakfast DJ in 2009, succeeding Tony Blackburn, the first breakfast host at the station's launch in 1967.