England's latest injury update sees four players ruled out of their pre-tournament training camp -- Jack van Poortvliet, Alex Coles, Alex Dombrandt, and Jamie George. Scrum-half Alex Mitchell is also a doubt for the match against Ireland. If Mitchell fails to recover from a knee knock, then England's resources at scrum-half will be stretched. George injured his hamstring at the weekend and will miss at least their match against Ireland on Feb 1. while Coles, Van Poortvliet, and Dombrandt are also unlikely to be fit for their opener. England are more optimistic on Mitchell but have called up two scrum-halves to the squad as cover. The latest update sees a first call up for teenager flanker Henry Pollock while scrum-half Raffi Quirke, scrum-half Ben Spencer, lock Arthur Clark, and hooker Curtis Langdon are also named in the squad preparing for Ireland.