Where it went wrong at Twickenham: three talking points

Ireland's Grand Slam bid was derailed in dramatic fashion on Saturday. But how much of it was down to an improved England or did Ireland problems contribute to their own downfall 

GAMBLE: Calvin Nash of Ireland leaves the pitch for a head injury assessment, which he'd fail, forcing Andy Farrell to shuffle his side. Pic: Harry Murphy/Sportsfile

England produced their best Six Nations performance under second-season head coach Steve Borthwick as Twickenham rocked for the first time for many years but though a hugely intense and physical England gameplan shut down Ireland’s ability to play the game on their own terms, the championship leaders also contributed to their own downfall.

1. Discipline