Why the need to keep getting in and out windows has always puzzled me. It Looks like he has been in and out all the ground floor windows at some stage, I would have thought that if you had to get in a house once through a window you would use the same window all the time, why keep changing windows to make an entry, could it be he was perfecting his method to see which window would be best? I would also have thought breaking in and out of a window would damage catches and make them less secure?
Not many people in their lifetime have to climb in and out of a window, anyone doing so makes sure it doesn't happen again even though there was a spare key in the coal shed, but with Bamber he must have liked the art of deception.
Same when he did the robbery, he had to make it look like it was someone else, to test security he said, how many would take the money in the first place,why not bring it up at the next meeting, how many would show someone else, who was not family (Julie) how to break into the family business?
When he was asked about the windows he could get in and out, he replied with his answer that you can flick the catch on the sash with any thin metal object, but you cannot close them, looks to me he had been practising this and in a way it was a taunt to the police.