Keith, Gary, Chris... Thanks for all the comments guys... Much appreciated.
Gary,
tbh I set out more to find images that would work alone, but also had a hint of support to the main area of interest. eg: #1 the lock indicating a door. #2 the horizontal lines where the brickwork had been painted over. #3 id like to do more with and play around with pp a little, and see if i can give it an older look perhaps like something from the natzi era. #4 for no reason
Portraying the city of newtown other than graffiti id probably go with something along the lines of:
Just my opinion tho...