A quick-thinking police officer and a helpful member of the public teamed up to take down a drug dealer in Northampton. At about 11.45am on August 23, a member of the public in Northampton town centre called Northamptonshire Police to report a possible drug deal taking place near Commercial Street. The man involved was Sean Christopher Prosser, aged 28, of no fixed abode, and when officers arrived, he made off on a bicycle. Video: Northamptonshire Police