ENGLAND captain Phil Vickery, left, will only be a replacement for the champions’ must-win World Cup clash with Tonga.
Matt Stevens stays at tight-head while Vickery, who has completed a two-game ban for tripping, replaces Perry Freshwater on the bench on Friday.
There are two changes to the starting XV, with Steve Borthwick in for Simon Shaw at lock and Lewis Moody replacing Joe Worsley at open-side flanker. Lawrence Dallaglio returns to the bench but Jason Robinson is still not fit.
Worsley takes Moody's place among the replacements in Paris while Lee Mears is also recalled to the bench, in place of Mark Regan.
Blindside flanker Martin Corry retains the captaincy while Mathew Tait stays at outside centre, with his Leicester rival Dan Hipkiss once again on the bench.
Ashton said the two changes he has made in the pack were done in order to give both Shaw and Worsley a rest.
"Moody's not played any rugby from the start for us for a long time. He's very fresh and desperate to make impact."
Friday's clash will be Moody's first start in any game since the Heineken Cup final four months ago, and his first for England since the autumn Test against Argentina in November 2006.
England go into the game knowing they must beat Tonga to clinch a World Cup quarter-final against Australia in Marseille on October 6.
Both sides have nine points but Tonga are second in Pool A on points difference.
They went into the tournament ranked as the fourth-best team in the group but surprised Pacific Island rivals Samoa before running South Africa close at the weekend.
In last night’s matches, Japan scored a last-gasp try to draw a dramatic match 12-12 with Canada in Bordeaux, while Portugal were denied their first win as Romania came from behind to edge it 14-10 .