The Hells Kitchen is/was in the Truman brewery on Brick Lane, its the same venue as last years show but with a totally different "set" Its usually a large gallery exhibition space which housed Gunther van Hagens "Bodyworks"
The only slightly recognisable bit are the back stairs everything else is built - Kitchens, restaurant, bedrooms, larders, garden,showers,
Its the same designer that usually does Big Brother.