What law protects him in the Embassy?

A few people in this thread are saying that he's not on English soil; that the embassy is under Ecuadorian law.

That's a myth. Ambassadors get immunity and international politeness means we don't go raiding embassies[1] but Assange is in England, on English soil, subject to English law, and being in some other country's embassy doesn't change that.

[1] unless they hold hostages or shoot our police officers