Continuity mistake: Jim Dale and Anita Harris think that Barbara Windsor is going to jump off the roof and race across the road into the nurse's block. We see Anita Harris is wearing dark seamed hosiery as she runs up the stairs. A few minutes later she hangs down from the roof and the seams have disappeared from the backs of her legs.
Continuity mistake: When Charles Hawtrey is doing keep-fit with the other expectant mothers, you can see next to him there is a lady with a red dressing gown, and the pillow she has her head on is next to the wall. But in the next shot, the pillow has moved away from the wall and a handbag appears from nowhere.
Continuity mistake: When Nurse May is standing up and screaming on the balcony after seeing Dr Kilmore on the roof of the nurses' home, you can see an ambulance in the car park of the hospital and by it are the two ambulance drivers (Sam and Henry) and a couple behind them. But in the next shot, Sam is now walking towards Henry as well as the other couple.
Continuity mistake: When Mr Bigger is being stretchered through some double doors following his x-ray, we see a close-up of him and you can see the pink uniform of a nurse behind the trolley. But when Dr Kilmore knocks Mr Bigger off the trolley, the nurse appears after the trolley has been wheeled out of the double doors.