When Karen shows up outside Larkhall snapping pictures of Jim Fenner he is standing on the right of Di from Karen's point-of-view, and also Di is standing by the car whilst Jim approaches Karen. When Karen later presents the developed photographs to Skelton for examination Jim is standing on the left of Di and both are seen to be approaching the camera (you can tell this because the green car is clearly visible in the background).
Selena standing position changes between shots while she argues with Jim & Sylvia in the office.
When Fenner goes to the lock up, a majority of the photographs of Karen are publicity shots from the series that could pass as pictures taken in the series. One photograph shows Karen on the G3 landing on the phone. This picture was taken while Fenner was trapped in Shell's cell, he would not have been able to take this photograph.
When Jim leaves G-Wing to go after Yvonne, she was already close to the hanging cell. But later she is seen getting closer and he is ahead of her.