Yes. The Doctor Who Confidential segment "Do You Remember the First Time?" (accompanying the episode "Blink") showed this, with details of costume, make up & so on. It's mentioned that having real people under the make up ramps up the creepiness factor. It also makes it possible for scenes such as the one in "Blink" where the angels are seen to change position behind Sally Sparrow in the old house as she momentarily blocks the camera's view.