Shoreham-by-Sea. Nothing else quite like them apart from lesser black-backed gulls - but they are quite a lot smaller than this large, heavy gull. It's larger than a Herring Gull.

Great Black-Backed Gull (Larus marinus) (10/01/2006) Shoreham-by-Sea. Nothing else quite like them apart from lesser black-backed gulls - but they are quite a lot smaller than this large, heavy gull. It's larger than a Herring Gull.

Great Black-Backed Gull (Larus marinus) (10/01/2006) Shoreham-by-Sea. And very distinctive in flight as you can see.