BBC Sport understands former England captain Chris Robshaw, who was among the players who apologised for the breach, is one of the players charged.
Richard Wigglesworth, Sean Maitland, Jackson Wray, Manu Vunipola, Tim Swinson, Calum Clark, Tom de Glanville, Joel Kpoku, Simon Kerrod, Fergus McFadden, Juan Pablo Socino and Alex Lewington are the other players charged.