Thomson is back in first-team action as part of an entirely new front row with Justin Va'a replacing Kevin Tkachuk and Moray Low getting the nod over Ed Kalman.
 
Scotland lock Alastair Kellock misses out with a minor shoulder injury so Scotland 'A' forward Dan Turner is promoted from the bench while fit-again Dan Parks takes over the captaincy duties.

Bath won 35-31 last weekend at The Rec and the Warriors are looking to bounce back from that narrow defeat and get themselves ready for the Celtic League clash against Edinburgh on Boxing Day

Head coach Sean Lineen said: "It's important the boys make a statement after last weekend's game. It was entertaining but it wasn't a win.

"Bath have made it quite clear that they're coming here looking to win but the crowd at Firhill have been fantastic and they¹ll be our 16th man."