A total of 9 different Mediterranean Gulls at the Gann yesterday at different times: 2 adults, 4 2CY and 3 juveniles/1CY. Couldn't make out any rings either, although Lionel Self did photograph one with a white ring (per Twitter).
Also a very smart adult Black-tailed Godwit, 2 Whimbrel and 2 Common Sandpipers. We had a Skokholm ringed juvenile Great-blacked Back Gull but it was just too far off to read.
(Dave & Lisa)