Seats - Rules 3 and 4

There have been lots of incidences recently of people taking up the seats or not giving up their seat for a person who needs it more but tonight was the best yet. 

Just as I sat down on the DLR a gentleman got on and made a beeline for the seat next to me. I was sitting in my preferred spot - one of the fold down seats in the wheelchair area (and I admit I do break rule 4 if a wheelchair gets in which is not very often). I was getting myself settled and finding my book so wasn't paying him my attention when all of a sudden there was a clatter next to me. This gentleman had put a large wheeled bag in the space. He then leapt across the aisle to grab the empty seat there. And he was not going to move his bag to let anyone sit down!