Sorry Seabird but your pic is Ringed Plover and Dunlin. Below is a photo of Golden Plovers, they are larger than the Ringed Plover and just smaller than a Lapwing.
Here is a Dunlin. I think this is the other bird in your photo. I can see why you thought they were Golden Plover as they both have the Black belly.
I agree on the Great black back gull, although immature gulls aint my best thing.
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