Mutko definitely dropping the hint that there were plenty of "never tested positives" at London 2012.
http://www.theguardian.com/sport/2015/nov/11/vitaly-mutko-russia-anti-doping-zero
UKAD digging themselves quite the hole. They don't report testing so no one knows how much testing they do, or don't.
You have to wonder what Diack made off the London games in bribes.