As I keep saying (to anyone who'll listen), the great thing about gulls is that there's always some around. And even if what's on offer is just common stuff like Black-headed and Herring Gulls, there's still a chance of finding ringed birds. It does help if the ring is bright plastic with big numbers or letter but even small metal rings can sometimes be read if you can get close enough. Places like Exeter Quay, where gulls expect to be fed, is perfect.
Black-headed Gull - 23/2/2016 Exeter Quay
It took a few minutes of stalking from different angles to get the full code - LATVIA - RIGA - S 349. Details sent, awaiting reply.
Now if only it had been a small dark Lesser Black-backed...