I... don't know what we'd call it either. Because really most of the time what people online call "British accents" are actually a variety of accents. (Though to be fair, calling them British accents is actually pretty fitting then, no?) but it's not Queen's English/RP... most of the time it's just the least exaggerated southern English accent. So.. southern English I guess is the closest..

Oh man, Irish. I can find even Jedward slightly attractive thanks to their accents. Do you know who Jedward are? If not... keep it that way. If you do, please please don't think less of us. :/