Selectors have made just one change to the starting XV which took on Bournemouth last week for their must win match in Berkshire.
With no.8 Dave Roberts unavailable Andrius Zacharovas comes off the bench and will start in the second row with Kieran Westlake reverting to the back row.
There are also two changes to the bench with Sam Bartle coming in for Zacharovas and Jordan Nicholls replacing the injured Phil Hinchley.