rwkTX
Another question... how are you planning to find a flatmate? Does the school provide any assistance or a forum to help people interested in sharing to match up with each other?
RK
a little after you get the offer, you get access to LBS portal, a powerful communication tool used by all students. It has all info you need, together with profiles of your classmates, a great discussion board, a database of admits willing to share a flat (both MBAs and MIFs) and much much more. Overall portal is a universal communication tool and you can access MBA & MiF data there. A good habit is to write a small introduction about yourself. Usually people indicate if they will be searching for a classmate, I personally picked someone who shared my habits etc. and quickly agreed with that person

there is also a FB group and a LinkedIn group, so you get to know people around you quite quickly