A music festival looks set to return following a two year hiatus.

Earlier today (Tuesday) the Sonisphere Twitter account sent the message: “Keep the 4th-6th July 2014 free! Planning a festival to celebrate 40 years of rock music at Knebworth #Sonisphere” .

The message has caused speculation that the dates will see the return of the festival to Knebworth House, which has not hosted the UK leg since 2011. It had been set to run in 2012 with Queen and KISS headlining but was apparently cancelled due to planning problems.