I left the office on the university campus just after 5.30 and while trudging down the stairs remembered that I had meant to check the Llandinam (Geography) Tower as a site that might attract a sleepy swift. I looked out the window and, to my great surprise, it had. Initially distant and looking quite dark (I had no bins), it briefly zoomed overhead showing its pale belly. It disappeared to the south a couple of times but came back briefly, occasionally passing low around the tower but usually much higher. Last seen just before 6pm. (My photographs through a dirty rain-spotted window with a cheap phone are not worth posting!)