Jemima the fact that he know knows you've had the police out looking for him and he still can't be bothered to contact you or drag his sorry arse home or to work is really telling you everything you need to know about this man.
Please, for the love of God, pack a large bag for him, take it to his mums, get a message to him that you have done so, and then go to work and get on with your day.
And cancel your wedding venue TODAY. Just do it. While you are angry. There is absolutely zero point in waiting to see what he has to say for himself. You know what will happen. He'll talk you round, apologise, feed you a load of crap about how sorry he is but his depression means he needs to let off steam sometimes, you'll cry, he'll cry, you'll forgive him, he'll think 'Phew, got away with it again.'
Then you'll go back off into LaLa Land where in your fantasies you have a normal adult relationship with a normal man who respects you and behaves like an adult, and you'll end up married to this sorry immature irresponsible twat who does not respect you or care about how you feel and who runs around the street with a bunch of druggie losers like an overgrown teenager with an ASBO.
You are 31 for God's sake. Just put a stop to this utter madness.