BBC admits it should have cut the performance.
www.bbc.co.uk
Really poor by the BBC, they already knew that there was at least one controversial act (not being broadcast) and other acts often will come out in support so this was hardly a surprise.
So why did the Director fail to cut the feed? Were there procedures in place if not why not this is a live TV it's not like something new for the BBC who have decades of experience of live broadcast and the odd F bomb from some idiot.

Bob Vylan: BBC says live coverage of Glastonbury set should have been pulled
It comes after Ofcom said it had asked the BBC why controversial remarks made by the band were broadcast live.

Really poor by the BBC, they already knew that there was at least one controversial act (not being broadcast) and other acts often will come out in support so this was hardly a surprise.
So why did the Director fail to cut the feed? Were there procedures in place if not why not this is a live TV it's not like something new for the BBC who have decades of experience of live broadcast and the odd F bomb from some idiot.