Chris Latham has warned England that Australia are determined-to explode out of their miserable slump in form with a victory at Twickenham on Saturday.

The Wallabies arrived in London on the back of six consecutive defeats, their worst run of results since 1969, and under-fire head coach Eddie Jones admits he has never felt lower.

Outspoken ex-Wallaby David Campese and former coach Alan Jones have piled on the pressure by calling for captain George Gregan to be axed as part of an urgent shakeup of the side.

But Latham, one of the squad's most senior players, remains upbeat and insists the Wallabies are gearing up to hit England with a big performance at the weekend.

"The most disappointing thing about it all is that we know as a squad we are better than the way we are performing," said the 1999 World Cup winner.

"We have some of the most talented individuals in world rugby in one team and yet we seem to be narrowly losing.

"It is small things that are losing us Test matches and that probably adds to the frustration but, behind all that frustration, there's a lot of confidence.

"The Australian cricket coach, John Buchanan, said when we met in Sydney that everything can be nice and smooth and you think the whole squad is running as a well-oiled machine when you are winning, but when you get a few losses, you start to find problems you never knew existed.

"Mate, it could easily click into place on Saturday. We can go back to last week and see what could have been and gain confidence from that, but what could have been and what is are two different things.

"We could easily click and we know if that happens it could be a good feeling. Playing England over here has always been a huge challenge and an exciting challenge to be part of. It's been a while since we had a good win at Twickenham."

Latham, aged 30, almost moved to Munster two years ago when his international days looked numbered but he decided to stay with Queensland, adapted his game and is now enjoying his role as one of the Wallabies' elder statesmen.

"It is an exciting time. We have 18-year-olds in the squad, they bring an enormous amount of enthusiasm and innocence and that is very infectious," said Latham.

"We are a very confident squad and have very confident individuals. It's not all doom and gloom when you are losing. It's individually very characterbuilding.

"Everything can run so smoothly and be so loving within a team and loving when things go well.

"It's when things aren't going well you see the inner sanctum and its great to be part of. I don't regret any of my decision."

Australia have included a number of rookies in the touring squad, some for the experience and some because they have been earmarked for immediate Test honours.

Hugh McMeniman, 22, and with three appearances off the bench behind him, is in line to make his first Test start while the Wallabies also predict big things for powerful centre Lloyd Johannson.

Mc Meniman won replacement caps against Samoa, Italy and France earlier this year but feared a drop in weight during the Super 12 season - from 112kg to 106kg - had made him too light.

He requested a release from the Australia Tri-Nations squad to work on his conditioning, knowing Jones had warned there would be no guaranteed route back.

"I didn't want to be a reserve, I wanted a look-in on the run-on spot. I couldn't have done that at 106kg.