Among the backs Elvis Seveali'i and Ryan Lamb start at outside centre and fly half respectively with Tom Homer moving to the left wing. Peter Richards is named among the replacements following his recovery from injury.
"Despite the adverse weather conditions this week, we've been able to adapt our schedules and have trained well for tomorrow's important visit to Worcester," said London Irish Head Coach, Toby Booth. "Whatever the competition, matches between the two clubs are usually very competitive and this one will be no different, especially as the Warriors always provide stiff opposition in front of their home supporters.
"Starting tomorrow, we face a series of matches that will impact on the outcome of our season. It will be important to establish winning momentum and we will be going all out to do so," Booth concluded.
Team:
15. Delon Armitage; 14. Peter Hewat; 13. Elvis Seveali'i; 12. Seilala Mapusua; 11. Tom Homer; 10. Ryan Lamb; 9. Paul Hodgson; 1. Clarke Dermody; 2. David Paice, 3. Faan Rautenbach; 4. Nick Kennedy; 5. Bob Casey (captain); 6. Richard Thorpe; 7. Jonathon Fisher; 8. Chris Hala'Ufia.
Replacements:
16. Danie Coetzee; 17. Dan Murphy; 18. Paulica Ion; 19. Kieran Roche; 20. Gary Johnson; 21. John Rudd; 22. Peter Richards; 23. Chris Malone.