Although it's essentially an in-house eatery, Skylon turned out to be a place not only for concert-goers. It was full when we arrived: lots of glossy, gossipy men and women, plus a couple of famous customers, the Pet Shop Boys, who were just leaving as we arrived (I'm sure it was nothing personal). The affable Duke of Kent was in a party in the main area of the restaurant, giving the place a certain cachet. We sat to have a glass of champagne at the excellent and achingly cool Terrace Bar, which sits in the middle of the room like an arctic oasis.