letting all british passport holders visit this country visa-free and applying the visa-free rule to all britons regardless of their race or ethnic background is not a "loophole." in other words, not making a special exception to exclude someone is not a "loophole." that's what you call a non-loophole.
it's like saying: "i was walking through the new york times newsroom and noticed that through some loophole some black people got to be reporters."
and in other news, i wish that omar khyam had just stuck to poetry.