It is possible, but it's unlikely. I've done some research on it myself. I think if you contact every school about transfers, see who will consider it, and then apply to those schools every year until you graduate you've got a better chance.
It it very hard to transfer into UK/Irish schools but it is usually done on a case-by-case basis. If you can make a strong case for transfer (e.g. a close family member being gravely ill) then you've got a better shot.
Good luck and don't get discouraged. People DO transfer to UK/Irish schools, just work hard on being one of those who make it.