**With no Guinness PRO14 action this weekend, attention turns back to the Guinness Six Nations with two Round 4 matches in store as the Championship edges towards its climax.** Unbeaten France still lead the way at the top of the table, and Fabien Galthié’s side will be looking to continue their hunt for a first Grand Slam since 2010 as they travel to BT Murrayfield to face Scotland on Sunday. But the action kicks off later today as Wales and England do battle at Twickenham, as the reigning champions head to London looking to avoid a third successive defeat against Eddie Jones’ troops. **England v Wales, Twickenham Stadium, Saturday 4.45pm** There were two standout names on Wayne Pivac’s team sheet heading into Round 4, with the return of Cardiff Blues back-rower Josh Navidi and Scarlets’ Liam Williams to the starting line-up. Navidi comes back into the fold after a recent hamstring niggle which had seen him out of action since January, while Williams will play for the first time since injuring an ankle prior to Wales’ World Cup semi-final in October. And Pivac is confident Navidi will stand up to the job in hand as his side prepare to go toe to toe with England on their own patch in what will be a physical battle up front. “Josh Navidi is a fantastic player over the ball,” said Pivac. “It's the breakdown work that he does, his defensive work and ball-carrying too. “He is a tough character and is someone that puts a lot of pressure on the opposition. “If you look at the Six Nations match last year he played a massive role in that win for Wales and he plays well in big games.
