Watch the full-length episode at http://video.pbs.org/video/2365408791/?Utm_source=youtube&utm_medium=pbsofficial&utm_campaign=gbba_covefullprogram (US Only) http:// pbs.org/food/shows/great-british-baking-show/
Premieres Sunday, February 1, 2015, 8:00-9:00 p.m. ET
The bakers work is cut out for them in the most demanding challenges yet.
