AAP

Returning Wallabies henchman Sitaleki Timani has predicted early fireworks when Australia clash with England at Twickenham on Saturday (Sunday AEDT).

Timani is returning from a back injury, which forced him out of the opening game of the Wallabies' European tour last weekend in Paris, where they were dominated in all aspects in a 33-6 loss to France.

The NSW back-rower's return could not be more timely for the Wallabies.

Coach Robbie Deans' side are without starting second-rower Kane Douglas for the England match after he was ruled out with a knee injury.

While reserve lock Rob Simmons is in doubt for the England game, as he has to face the International Rugby Board's judiciary on Wednesday (Thursday AEDT) for a lifting tackle on French flanker Yannick Nyanga.

"Probably when we first kick off the ball it's going to be on from there," said the Tongan-born giant.

"Then we want to make a good start to our scrums and lineouts.

"The scrum is the main focus for us this week.

"The English have a great front row and pack, so it's going to be a big challenge."

Australia were pushed around by the French pack in Paris but having Timani on board adds plenty of steel to the Wallabies' forwards.

England are bracing for a backlash from the Australians and know they'll provide a much tougher challenge than their last opponents Fiji, who they trounced 54-12 at Twickenham last Saturday.

"I think we have made some good strides against Fiji and the pleasing thing was that some of the shape we worked on in training was shown in the game," said England coach Stuart Lancaster.

"But we weren't patting ourselves on the back in the review because we missed four or five tries and we need to be ruthless in that regard. We will have to step up a couple of levels."