Hi there !
I agree with the advise mentioned above , the most important thing to do is call the universities you are interested in and confirm if you are eligible for a transfer. Based on the policies at our universities you can be considered for an advanced entry to second year or a transfer if you have passed all the modules at your current university and you are not studying a health and life science course such as Pharmacy which does not allow transfers.
In terms of looking for accommodation you can check online ( most likely facebook ) for student who are looking to share a house or you could post here on TSR to find students who are looking for a roommate. If all else fails you can stay in student halls or research some private student accommodations within your budget and stay there for second year. If you are planning to transfer before the start of October I suggest you start applying for your transfer ASAP .
I hope this helps 😁 and good luck with your application.
De Montfort University