Pretty much, as far as I'm aware the neutral venue games are on the police recommendations. There's a real North/south divide, I.E. Everton v Liverpool is at a neutral venue but London games, Spurs v Arsenal I think, aren't.
Oddly enough a lot of Liverpool's more difficult away games are scheduled at neutral venues. Possibly because they don't know which exact one they will be officially gifted the title at, obviously this doesn't affect the integrity of the league though and has nothing to do with the behaviour of 'the most knowledgeable fans in the world', allegedly.