Aussie skipper's ominous warning

Australia captain Michael Clarke said his side still has room for improvement after an utterly dominant 405-run win in the second Ashes Test against England at Lord's on Sunday.

The Aussies needed just 37 overs to bowl England out for a meager 103 on the fourth day, with paceman Mitchell Johnson leading the way with three cheap wickets, having set their archrivals a mammoth victory target of 509 runs.

Clarke's men produced a near-ideal display to level the five-match series at 1-1 after their 169-run loss, also inside four days, in the first Test in Cardiff.