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It's the penultimate round and as the travelling marquee pitches up in the Cornish village of Mousehole, it's time for the bakers to get to grips with the most difficult of all baking skills - pastry. They bake their own versions of hearty British pies, get down to details with exquisite pastry canap茅s, and take a crash-course in crimping for this week's surprise bake.

While they're rubbing-in and rolling-out, Mel and Sue will be finding out that Britain's earliest pies really were humble, how pastry became an art form and how pies used to have a more sinister side.

Then judges Mary Berry and Paul Hollywood will decide who will be the final three to go through to the final.