Only quite late on in the evening, somewhere between Bryan Ferry's plaintive whistle in "Jealous Guy" and the longed-for intro to "Virginia Plain", is Roxy Music's O2 audience roused to something like excitement. It's clearly a huge relief to Ferry, but it's the band's own fault: with as elegantly innovative a back catalogue as Roxy's, this should have been a torrent of exuberant memories, but for substantial portions of the set the longueurs are alleviated only by the consistently exciting guitar work of Phil Manzanera, as the band leads us around some of the less sparkling corners of their history. It's like going through a photo album and finding several of the most important snapshots missing: where are "Ladytron", "Both Ends Burning", "Dance Away", "Pyjamarama"?