I too have been trying to see if this story would stand up, after an acquaintance sent me the original details. As Jacko says, it was originally by-lined by someone called London Correspondent.
But when I called the number listed on the BNP site against London region, the person who answered denied all knowledge of anyone called London Correspondent, and recommended me to the BNP Press Officer, one Phil Edwards.
He would give me no further information, other than to point me to the URL posted by smudgethepuddie.
So it probably is utter bollax - not made any more believable by the BNP's utter paranoia about revealing who most of them are.
airsound