This weekend (18-19 August) thousands of festival-goers will be donning wellies and travelling down to Hylands Park in Chelmsford and Weston Park in Stafford to catch the likes of the Stone Roses, Nicki Minaj and The Killers strutting their stuff live on stage.
If you fancy joining them tickets are still available for the two-day event, will also feature fair ground rides, comedy and (hopefully) good weather.
Unfortunately, Frank Ocean has pulled out of the show, only to be replaced by Wiley, so one of the festival's acts who truly deserves the credit of a 'must-see' star had to be left off the list.
Now in its 17th year, a wide variety of acts are confirmed for the event, so we've gathered together a few names from the line-up here to help you choose who to watch this weekend...
The best bands at this weekend's London festival
From Muse and Lana Del Rey to London's first big festival of 2013 - the biggest gigs of the week
Oasis star says Beckham could also go into management
Harris takes home the Songwriter of the Year award
Kasabian, Jake Bugg and more none-directioners