Wales are coming under increased scrutiny over the circumstances that allowed Tomas Francis to return to the field at Twickenham despite suffering what appeared to be a serious head injury.
In an open letter to the Welsh Rugby Union, World Rugby and Six Nations bosses, lobby group Progressive Rugby, which is made up of a number of former and current players, as well as medical experts, described what unfolded as "a clear and flagrant breach of HIA protocol".
TV footage captured Francis staggering near his own try line in the 20th minute after a clash of heads with team-mate Owen Watkin, appearing to have to use the pads of the posts to hold himself up.
