I perhaps saw 15 minutes of a show or movie i don't know which back in the 70s. It was on a B/W TV, so I can only quess it was in color. It dealt with aliens and ufos. The head alien was a woman (a rather lovely one I might add). In this scene I saw, a man impersonating a doctor and two young women impersonating nurses came aboard this ufo (perhaps to steal it or capture the alien(s). These imposters were carring sub machine guns in their medical bags. Upon dicovering their trechery the female alien hits the alarm button.This brings a host of automatons out of hidden doors on the walls. Under a hail of machine gun fire, that did not phase the robots, the phony doctor and nurses were disintergrated by energy beams that came from the robots' left eyes. After this battle scene the female alien was wrestling on the ground outside the ufo in what appeared tobe desert terrain. The female aliens hairpiece reminded me of the wigs worn by the women aliens in the series UFO, which leads me to believe it was British made. Does anyone know this film?