England coach Eddie Jones forecast his side would be "10 per cent better" against Wales after ending Ireland's bid for a Grand Slam with a 24-12 win in the Six Nations at Twickenham on Sunday.
Jones' men were a commanding 17-0 ahead at the interval thanks to tries from flyhalf George Ford and fullback Elliot Daly.
Those scores were both converted by captain Owen Farrell - the son of Ireland head coach Andy Farrell - with the centre also adding a penalty in what was arguably England's best 40 minutes since their World Cup semi-final victory over New Zealand last year.
England lost their tournament opener away to France, the only side that can now complete a Grand Slam, in what was their first match since being beaten by South Africa in the World Cup final.
England welcome reigning champions Wales, smarting from a 27-23 defeat by France in Cardiff, to Twickenham when the Championship resumes a week on Saturday.
"We took another step up today and we'll take another step up when we play Wales," said Jones.
"We know every time England play Wales it's the biggest game there's ever been, so I don't expect next Saturday week to be any different."