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England captain Alastair Cook has warned Australia that his Ashes winners will prove a tough nut to crack when the bitter rivalry resumes down under later this year.
Cook's team concluded their dominant 3-0 series win over the Australians with a dramatic draw in the fifth Test at The Oval on Sunday.
England, set a target of 227 to win after Australia captain Michael Clarke's bold declaration, needed 21 more to win off 24 balls with five wickets left when the umpires decided the light, even with the floodlights on, was too dark to continue.
The two sides now play two T20's - the first at the Rose Bowl on Thursday - followed by seven one day internationals.
