Set builders and designers worked throughout the weekend to put the finishing touches to ITV Central's new look.
The old yellow background has been replaced by blue.
It is part of a broader makeover for ITV which has seen all of its on-screen and online services rebranded.
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They will be joined by Duke Dumont and Disciples at this year's festival in Staffordshire.
There is no evidence the Westminster attacker Khalid Masood was associated with so-called Islamic State or al Qaeda, the Met Police said.
A cloudier start, but turning dry, sunny and warm.