I’m quite excited about the redevelopment of London’s King’s Cross station, and to judge from the number of fellow travellers visiting the Network Rail exhibition stand over the last few days I’m not the only one.

Lewis Moody, the ex-England rugby union captain, previewing this weekend’s finale to the Six Nations thinks that, if Wales win against France and thereby claim their third Grand Slam in eight years, ‘by any token it would be an incredible feat’. Let’s examine that claim.