You're Nicked

I had a tip off that there was going to be a neighbourhood policing liaison event in the local park today. Sensing a possible Blip I wandered down there. 

The corner by the café was buzzing with police, cadets, support officers and the one from Postman Pat's home town. He was being given instructions by his back up copper on how to arrest suspicious looking photographers.

I judged that his cheery smile indicated that I was free to take a snap.