I'm a massive milk guzzler and it tends to replace the urge to eat during the day. I even go to bed with a bottle of milk. I should try some alternatives though.
I'm a flexitarian and probably eat meat 3 or 4 times a year. I could never give up milk until we have a decent substitute for it.
I've heard that Not Milk is supposed be be good but I'm not sure if it is sold over here: http://www.thenotcompany.com/