RADIO: Here's when Nick Grimshaw and Greg James start their new Radio 1 shows...

Greg James has already finished his afternoon show and Nick Grimshaw is about to host his final breakfast show on Radio 1.

Now, Celebritain can reveal when their brand new shows will launch.

 Greg James and Nick Grimshaw have swapped slots on the station

Greg James and Nick Grimshaw have swapped slots on the station

Monday 20 August is the big day, with Greg taking over the iconic breakfast show.  Nick is expected to launch his new afternoon show from 4pm on Monday 3 September.

A source told us "Greg is currently taking a holiday and then he'll have a couple of weeks to get ready for his new show.  

Everybody at Radio 1 is so excited, both presenters have new ideas and features the listeners will love".