Thanks everyone, I was really excited whenI 'saw' number 4. As I am one of those people who really struggle to 'see' potential shots. We were wandering around the edge of the top of the arndale carpark, looking around, and I just noticed this massive billboard, so I rested (handheld, and the sun was going down..lol) on the railings and just waited. Took about 10 minutes before I got one that I liked.
I was hoping for a similar mix of people as the ad, dressed in similar style clothing. I did get that but they didn't look right.