and may consider to move to the other part of Buckingham before next September (2008)
The MAY in that sentence MAY be a problem. The allocations are done on the basis of proof of address and I think that the official cut-off was Dec 14th.
After March the chances of getting a place will be really slim since the allocations will have been made, for moves before March then you really need to talk to admissions, however IMHO you will need proof of new address to have a hope.
Only my interpretation.