What I will suggest is go for managed provider, they will get this job done free of charge, rather than messing with your website files., even for future problems you they wont help you as its unmanaged, so if you need 24x7x365 days support managed hosting is best option.
You can take a look at VPS UK or Even Web Hosting UK
Both are one of the best managed VPS hosting provider , I have asked them to migrate many of my customers website and they do their job perfectly.