I don't know about in the UK, but those girls do not look like the hatchery buff Orpingtons we have here. Too small, too tight feathered, and the coloring is way off. Orpingtons wouldn't have those white speckles in the hackle. Those are a product of the dominant white gene and are found in red sex links and similar hybrids.
So I think they are a layer hybrid of some kind, probably something like red sex link crossed with light Sussex. There are so many types of hybrids these days that it's difficult to keep them all straight.
So I think they are a layer hybrid of some kind, probably something like red sex link crossed with light Sussex. There are so many types of hybrids these days that it's difficult to keep them all straight.