'We must use our momentum to win Ashes' says Strauss

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"We will take a lot of positives out of this series no matter the final result," Strauss said. "But having played the sort of cricket we have in the last two Tests, we need to go on and finish the job. Everyone was saying that we might have a better chance of beating them in two or four years' time, but you don't know that. We have to use the momentum we have gained to go on and win the series.

"It will be hard to get them in such a vulnerable position again.You don't know what might come out of Australia in the next two to four years. At the moment we have a very good Australian team with a few of their players out of form. We have dominated two Test matches in a row and I don't know whether there will ever be a better time to beat them.

"People keep talking about how weak they will be without [Shane] Warne and [Glenn] McGrath but you can't know that for sure. It would be very disappointing to fail now because we have put so much time and effort into competing with them."