Production took place at the Shepperton Studios, England. During filming, in order to allow for the Muppets and the human actors to be in the shot, floors had to be removed and re-inserted, with Michael Caine having to walk across narrow planks between the Muppets and their performers. Additionally, the buildings in the London street scenes were constructed by hand but diminished in size in order to achieve the appearance that the streets were relatively longer. When the musical sequence "It Feels Like Christmas" ends with the crane shot, the short buildings became visibly seen in the background, in which Brian Henson explained on the DVD audio commentary that they were aware of the problem during shooting, but eventually decided that the closing shot was worth it as they believed not many people would notice the error.