Rugby's cautious approach to head injuries means the sport is ahead of others when dealing with concussion, says Wales captain Sam Warburton.
Gloucester maintain their 100% record in the Challenge Cup with a 35-14 victory over French side La Rochelle.
Worcester hope to receive compensation for the loss of injured South African scrum-half Francois Hougaard.
Cambridge beat Oxford for the first time in seven years in the 135th men's Varsity match at Twickenham, while Oxford women win.
Audio & Video
Jonathan Davies and Phil Davies discuss England’s development under Eddie Jones, George North’s injury scare and whether Rob Howley will join the Lions coaching team.
BBC pundits Matt Dawson and Paul Grayson on how England have grown during 2016 on their way to a record-equalling 14-game winning run.
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