That's the one,
Speaking of Gulls We have a major winter roost on Bartley reservoir, up to 10,000 birds but I don't go out at night to count them. Mostly Herring and black headed, some lesser and greater black backs, but we have had sightings of mediterranean, Iceland and Bonapartes gulls. And an Kelsey disinfection by On migration, usually a succeeding stop.
Unfortunately Bartley reservoir is almost famous in birding circles forgetting almost devoid of birds. However we have resident great crested grebes, a few mallard and Canada geese, and cormorants. I have also seen golden eye, tufted duck, grey lag geese and little grebes there. So it must have got better since Bill Oddie had it as his local patch.