Hi Zinny,
Yes if you are currently receiving Housing Benefit as a tenant and you move to a different Local Authority then you cannot make a new HB claim and you will need to claim UC. This is termed Natural Migration to UC.
I cannot imagine the new Minister for Social Security making a change of address a reason for a medical. That would be illogical. Look out for announcements in the Budget next week and at the BenefitsandWork news section.
David
Nothing on this board constitutes legal advice - always consult a professional about specific problems