Ben Youngs has warned Australia ahead of Saturday's Twickenham showdown that England are a more dangerous team than when they stormed to a series victory in June.

The Wallabies bring down the curtain on the autumn programme at Twickenham seeking to avenge the historic 3-0 whitewash they suffered at the hands of Eddie Jones' men six months ago.

South Africa, Fiji and Argentina have been swept aside this month and while Norfolk-born Youngs knows Australia have also improved over the course of the Rugby Championship and European tour, he insists England now bristle with attacking intent.

'I believe we have layered on another level to our attack since then. In the first four-and-a-half minutes against Argentina, until Elliot Daly went off, we were causing them trouble,' said the Leicester scrum-half, who played for Holt and North Walsham as a youngster.

'We looked fast and we looked like we were on top of them. We had those guys turning in and the ball was going out the back, when they were drifting we were hitting short.

'Our manipulation of their defence was good and we had to adapt when Elliot was sent off, so our tactics changed slightly.

'Saturday is another step forward for our attack and I do feel we are a lot better side than the summer. I'm sure they feel the same.'

England are hoping to equal the national record of 14 successive Test victories set by Sir Clive Woodward's World Cup winners by toppling Australia and Youngs believes the biggest threat to their ambitions is complacency.

He said: 'We spoke about complacency last week. All our prep had been great and the only thing stopping us from having a great performance against Argentina was a complacency mindset.

'Sometimes you do the greatest prep and think it's just going to happen, then it doesn't. You can do the greatest prep but you've still got to go out and execute it.

'There's going to be no chance of complacency. We are 100 per cent focused on getting all four victories and this is our chance to do that.'