Actress Hilary Heath who plays Julie is not mentioned in the cast list at the end of the film.
When the aliens' spaceship appears, the model used is the same one from Daleks' Invasion Earth 2150 A.D. (1966), but repainted in a lighter shade.
Opening credits: All characters and events in this film are fictitious. Any similarity to actual events, or persons, living or dead, is purely coincidental.
The alien spaceship seen towards the end of the film is the Dalek saucer from Daleks' Invasion Earth 2150 A.D. (1966).