I always use YesAsia ... Mainly for books and films though, i have never bought a game from there, but i have never had to pay any tax when things have arrived like i had to with Play-Asia.
It's still pretty much 55 quid (it says 45 quid but i don't know if thats with shipping or not... probably not) but like i said at the very least i haven't had to pay any extra when i've received deliveries.
YESASIA: Tatsunoko VS. Capcom Cross Generation of Heroes (Japan Version) - Capcom, Capcom - Wii Games - Free Shipping