It's not about how many died or how they died. Millions died, a good percentage of them because they were Jewish. Most people think the figures were exaggerated, and that doesn't constitute holocaust denial. But to say it didn't happen is ludicrous. He's probably a member of the Flat Earth Society too. Unfortunately there's no law against that.
UN: Gaza could be 'uninhabitable' by 2020 if trends continue (AP)
from the article: British bishop convicted on Holocaust denial charge