Really?
It sounds like I've been spun a yarn.
( The Mock TurtIe ™ --- Thinks you are a cunt, on, Mon 8 Jun 2009, 16:08, archived)

I'm a mongrel too
and I manage to vote.

Seriously, if you are a British citizen you enjoy all the rights of other British citizens.

British subjects are another matter, but I think that was limited to Hong Kong/ Falkland Islands/ Gibraltar and whatever other remnants of Empire still exist.
( Cactus 1 doesn't care what you think on, Mon 8 Jun 2009, 16:12, archived)