I watched this on the TV.
Actually, I have a confession. I had been out for a curry and got back just as the 'delayed live' broadcast was beginning. I came over all tired, which was exacerbated by the small quantities of wine I had had with dinner. So I had to rewind on the Sky+. So it was delayed delayed live.
The details are here with links to the unnecessarily Flashy programme notes ie fine from home but completely inaccessible from any workplace that doesn't have Flash, so totally pointless for any concerts I will attend after work.
I enjoyed it from the comfort of my sofa, and thought that all the performers were at least of a satisfactory standard. There was nothing in the programme that really attracted me beforehand, and nothing about the performances that changed that view. Glad it was on, glad I watched it, glad I didn't fork out to go in person.