Health and Safety in 1964:
Get a Dalek operator into the Thames. Risk him drinking sewage. Hire an ambulance and pick a location near a hospital. EDIT- they couldn’t even be arsed to get an ambulance on stand-by, only a Taxi.
No Dalek operators were actually harmed filming the famous Dalek Invasion of Earth. Though some were mentally scarred for life and found themselves circling famous London monuments without direction or aim.
in 1996, a Dalek operator revisited the sight and tried to exterminate a flock of pigeons. His attempts were unsuccessful due to the fact…he wasn’t actually a Dalek and the whisk his wife brought him was clearly meant for the cookery course.
THINK AGAIN