Thanks to a visiting birder who pointed me to a Greenshank & 2 Whimbrels. In return I pointed him to a group of 6 Med Gulls - sadly all unringed.
The first 2 ringed BH Gulls of the "Winter" -both adults. Black 2CHN has been featured before. Ringed as a nestling near Birmingham in 2019, it arrived at Newport in December & was here, on & off, throughout 2020 & up to mid March this year. White 26LO is probably from Hosehill Lake near Reading.