Damien Martyn was next out, adding only two runs to his overnight 19, when he prodded forward to a Richard Dawson off-spinner and dragged the ball back onto his stumps.
Martin Love, who went into the fifth test with more than 500 runs and only one dismissal against him in one test and two tour matches against England, survived a strong lbw shout from Steve Harmison on 27 but was bowled on the next ball.
Australia's last hope, Adam Gilchrist, blazed 37 before he fended a Caddick short ball to Mark Butcher at second slip 15 minutes before the lunch adjournment as the hosts slipped to 181 for eight.
The brightest light for England, however, was the performance of Michael Vaughan.
His freewheeling 183 propelled England to a 451-run lead after England had surrendered a one-run margin on the first innings when the Australians were out for 363.
Vaughan increased his return for the series to 633 runs, making him the most successful English batsman on an Australian tour since Geoffrey Boycott amassed 657 in 1970 to 1971.
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