Sonisphere Festival will not go ahead later this year, organisers have confirmed.
The rock and metal festival traditionally takes place on the first weekend in July at Knebworth, but organisers have now revealed that it will not return in 2015 as they have failed to secure a line-up they felt happy with.
In an official statement, organisers said: "Team Sonisphere reluctantly confirm that Sonisphere will not take place in the UK in 2015. We've been working hard to get a lineup that we felt was good enough but also on a weekend which would avoid other events that we know rock fans would want to support."
They continued: "Unfortunately our last irons in the fire have just been extinguished and it's clear that we won't be in a position to run the event this year. We've said in the past that Sonisphere will only go ahead if we feel it is going to be good enough and that hasn't changed. We hope all rock fans have a great summer with all the festivals and concerts already in the calendar and we plan to see you all in 2016."
The event was headlined by Iron Maiden, The Prodigy and Metallica in 2014 and has seen the likes of Biffy Clyro, Slipknot and Linkin Park top of the bill in the past.