PC Collins looked in through wrong window to see Ralph's body
Raid team, including PC's Delgado and Collins, approached door from right, passing the kitchen window, and therefore, PC's Delgado and Collins could not have gone past the door to look in through the kitchen window to enable Collins to see a female body which he later says turned out to be the body of Ralph Bamber, an error he did not realize he had made until he actually got into the kitchen?
Collins could only have looked through the window marked "Office window", and if he saw a female body through that window, he could not have mistaken Ralph Bambers body for the female body, because both bodies would have been in completely different rooms downstairs...