The bird didn't show for at least and an hour, and for most of the time I was the only person present. One poor guy had come all the way from Leeds by train and bus to see it, but left without it having shown. I do hope he found the Chough on his way home.
It flew around two or three times whilst I was there, but spent most time lying on a nearby rooftop or security lamp with Herring Gulls for company.
Here's a short video of the bird interspersed with some of the still shown above.