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World Rugby’s chief medical officer has told the BBC the sport’s rules may have to change to reduce concussions

Reported concussions in rugby have doubled in five years and a UK expert said on average one player at every Six Nations match suffered a brain injury.

English and Scottish rugby unions said they were trying to make the game safer and increase awareness of concussion.

The number of reported concussions in English rugby rose by 59% in 2013-14 and in Scotland, the figure has also nearly doubled in the past two years.

BBCs Panorama Team have undertaken an investigation and their programme Rugby and the Brain – Tackling the Truth – will be broadcast on BBC One on Monday 21 September, at 20:30, and afterwards on the BBC iPlayer.