It was the best audience for the series so far, beating the 8.9m viewers for last year's final, and gave BBC One a 38.6% share of viewing.
Debra Barr, James McQuillan and Lorriane Tighe were dumped, leaving Kate Walsh and Yasmina Siadatan in the final round, where they will be designing and manufacturing a box of chocolates.
The series concludes on Sunday night at 9pm instead of next Wednesday, due to a clash with the England football World Cup qualifying match against Andorra.
ITV1 was last night's next most watched channel at 9pm-10pm, earning a 12.4% share with 3m tuning in for 'Cops With Cameras'.
Channel 4 followed with another in its documentary series 'Embarrassing Bodies', which was seen by 2.5m and got a 10.5% share. It was watched on Channel 4+1 by 311,000 viewers.
BBC Two's 'Kate Adie Returns to Tiananmen Square' pulled in 1.2m viewers for a 5% share, while Five's 'Extraordinary People: The World's Strongest Toddler' managed 932,000 viewers and a 3.8% share.
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