England prop Joe Marler returns to action for Harlequins when the Premiership champions travel to Northampton Saints tomorrow.

There are six changes to the starting line-up of the team which beat Zebre in the Heineken Cup.

Among the backs, Ugo Monye moves to the left wing, with Tom Williams starting on the right.

In the forwards, Joe Marler and James Johnston return to start in the front row alongside Joe Gray at hooker.

Olly Kohn partners George Robson in the second row, while Maurie Fa’asavalu is named in the back-row.

Dave Ward comes on to the bench for Rob Buchanan, who picked up a knock during the Aviva ‘A’ League final victory over Saracens Storm on Monday night.

While Mark Lambert will look to make his 100th appearance for the club.

Harlequins line-up to face Northampton Saints:

15. Mike Brown, 14. Tom Williams, 13. Matt Hopper, 12. Tom Casson, 11. Ugo Monye, 10. Nick Evans, 9. Danny Care; 1. Joe Marler, 2. Joe Gray, 3. James Johnston, 4. Olly Kohn, 5. George Robson, 6. Maurie Fa’asavalu, 7. Chris Robshaw, 8. Nick Easter.

Replacements: 16. Dave Ward, 17. Mark Lambert, 18. Will Collier, 19. Charlie Matthews, 20. Tom Guest, 21. Karl Dickson, 22. Ben Botica, 23. Sam Smith.