Chris Robshaw has warned his Harlequins teammates they can't afford to switch off for a moment in their Heineken Cup showdown with Clermont Auvergne.
See how the teams are preparing for Saturday.
Relive the action from Twickenham in 2013.
Relive 2013's action from the Millennium Stadium.
A look back at some of the big games between England and Australia over the last 20 years.
See how the teams are preparing for Saturday.Photo galleries home