There can be a huge shift after an Olympic Games with many leading swimmers retiring. Michael Phelps will be particularly missed at the World Championships because he excelled in so many events... The United States will still dominate but it will be fascinating to see how Germany and especially Australia respond to very poor Olympics performances last summer.
For years the BBC's voice of swimming was the unfortunately named Hamilton Bland, whose TV career ended in controversy in the late 90s. There's nothing bland about his successors, former Olympians Adrian Moorhouse and Andy Jameson, who sounded as though they'd swallowed several gallons of Red Bull as they jabbered their way through last night's pool action at London 2012.