London Welsh make three changes for Saturday’s Greene King IPA Championship fixture with Yorkshire Carnegie at Old Deer Park (KO 2pm).

From the side which defeated Ealing Trailfinders, 22-16, last weekend, in to the Exiles' starting XV for tomorrow's clash with Yorkshire come James Lewis, Koree Britton and Ben Cooper.

Saturday sees a couple of notable milestones for London Welsh. Loosehead prop Nathan Trevett, who has three tries in his last two matches, makes his 50th league appearance, while fly half Olly Barkley makes his 50th appearance for the club in all matches.

In the backs, Seb Jewell's absence causes a reshuffle with James Lewis coming in on the wing and Nic Reynolds moving to the centres to partner Guy Armitage.  

In the forwards, Koree Britton and Ben Cooper start at hooker and tighthead prop respectively, with Nathan Morris and Jack Gilding moving to the bench.

On the bench, Josh Ovens could make his debut appearance for the Exiles since joining on loan from Bristol Rugby.

When the sides met at Headingley in November, the Exiles came away with a hard earned 10-7 victory thanks to Chris Elder's try and Joe Carlisle's decisive drop goal.

London Welsh head coach Rowland Phillips said: "Ealing beat us quite convincingly earlier in the season, so to go there last weekend and come away with a bonus-point win was a really good result, as Ealing are fighting for their lives.

"But while it showed how much we've improved, but we have to be critical of ourselves and we let a lot of opportunities slip. We've got to be more clinical.

"Yorkshire are going extremely well and have a very strong squad – they play an expansive game and we know Saturday is going to be a huge challenge for us. Kevin Sinfield has really settled in to union and is making them tick, while Ryan Burrows is a massive influence for them at Number 8. He's a top quality player and a huge threat.

"We really need to be on our guard and prepared to meet the challenge that Yorkshire will pose.

"When we went up to Headingley earlier in the season we worked so hard and showed a real mental edge to get a result, so we know we have that in us and we also know that we've improved massively since then.

"We need to keep working hard and have the confidence and belief to keep trusting in what we're doing.”

London Welsh: 15. Chris Elder, 14. James Lewis, 13. Guy Armitage, 12. Nic Reynolds, 11. Josh Drauniniu, 10. Olly Barkley*, 9. Ryan Glynn, 1. Nathan Trevett, 2, Koree Britton, 3. Ben Cooper, 4. Josh McNally, 5. Ben West, 6. Will Skuse, 7. Ryan Hodson (C), 8. Kieran Murphy.

Replacements: 16. Nathan Morris, 17. Darryl Marfo, 18. Jack Gilding, 19. Matt Corker, 20. Josh Ovens, 21. Rob Lewis, 22. Joe Carlisle.

* Denotes full international