LONDON: There was no evidence that Wales winger George North was bitten in the latter stages of their controversial 20-18 Six Nations defeat by France on Saturday, the citing commissioner has said.

Six Nations bosses have opened an investigation into the chaotic scenes at the end of the France-Wales game in Paris.

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England were denied successive grand slams and a world record for successive Test match victories after going down 13-9 to Ireland in the final match of this year's Six Nations.

A vibrant Scotland side ran in four tries to crush Italy 29-0 and give departing coach Vern Cotter a fitting send-off in their final Six Nations match at Murrayfield on Saturday.

France beat Wales 20-18 after a bizarre and chaotic end to the match as Camille Chat scored a try 20 minutes after fulltime had elapsed on Saturday to salvage Les Bleus' Six Nations campaign.

From the rain-lashed streets of Dublin to the hills of Dunedin in New Zealand, all eyes in the rugby world will be trained on the Aviva Stadium on Saturday afternoon (Sunday ADT) to bear witness to triumph on a grand scale or to what England captain Dylan Hartley describes as the "dirty feeling" of losing a match yet still winning a title.

Eddie Jones has urged England to embrace their inner Sir Edmund Hillary as they contemplate scaling a significant peak in Dublin on Saturday, back-to-back Grand Slams that would be the Everest of their expectations.

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All of New Zealand should be cheering on England on Saturday in Dublin as they look to eclipse the All Blacks' winning streak of 18 consecutive victories.

England's second successive Six Nations title was secured after a 61-21 thrashing of Scotland and coach Eddie Jones said there would be "a few quiet beers" to celebrate before attention quickly turns to next week's grand slam trip to Dublin.

France beat Italy 40-18 in Rome on Saturday to keep their slim Six Nations title dreams alive.

George North responded to criticism from his own coaches by scoring two tries for Wales in a 22-9 win over Ireland in rugby's Six Nations on Friday (Saturday AEDT), handing England the chance to clinch the title with a game to spare.

Dylan Hartley, the England captain, has admitted that he was initially "confused" and then "at fault" for not dealing with Italy's unexpected no-ruck strategy in Sunday's Six Nations game at Twickenham.

World Rugby is to consider whether it needs to review the laws ­governing the breakdown following Sunday's controversial Six ­Nations match between England and Italy at Twickenham.

England coach Eddie Jones launched an extraordinary attack on Italy's innovative breakdown tactics in Sunday's Six Nations clash, saying "that's not rugby" and that the fans should get their money back.

Ireland overcame a stubborn France side 19-9 on Saturday to move top of the Six Nations standings and stay on course for a possible title showdown against defending champions England.

England remain on course for back-to-back Six Nations grand slams after a ragged 36-15 victory over Italy on Sunday.

Stuart Hogg and Finn Russell shone as Scotland staged a rousing comeback to beat Wales for the first time in 10 years in an absorbing 29-13 Six Nations victory at Murrayfield on Saturday.

Ben Te'o will make his first international start after being named at outside-centre for England in Sunday's Six Nations clash against Italy at Twickenham, one of four changes to the team that beat Wales two weeks ago.

Elliot Daly's try four minutes from time gave champions England a 21-16 victory over Wales in a pulsating Six Nations clash played at relentless speed amid an amazing atmosphere at Cardiff's Principality Stadium on Saturday.