So, there are some things to be aware of:
Firstly, if you would be aiming to reapply to second year, you would need to contact the uni first to ask if they will even consider a transfer (which is what applying to any year other than first year would be considered). Many unis and courses do, but not all will and it will always depend on how well your current course matches up to the first year of their course. It's never guaranteed and you have to contact them first to find out if they do accept applicants in that way.
Secondly, as noted above, there will be some potential SFE funding issues. After doing 2 years in a degree elsewhere, you would not be able to get full funding if you started a new course from first year (which is honestly easier to do from an applications point of view) and so unless you are able to self fund tuition fees for the first year, you would need to be aiming for second year entry as you noted. This is assuming you have no other prior years of study, didn't do a foundation year, etc, etc.
Also note that a second year transfer would only work for moving into the same subject normally. If you were looking to change to a different subject there is virtually no situation where you could go into second year of the new subject after doing first year in an unrelated subject at another uni - even if you were studying a closely related subject the odds are much worse there. Otherwise you would be looking at starting in first year again which, as noted, will leave you with SFE funding issues.
All that aside, that seems like a fairly drastic solution to a problem that would otherwise be simpler to solve - just aim to move out for your third year at your current uni, and finish your current course while not living at home. You don't need to change uni just to move out...unless you have another reason for moving uni or changing course, I'm not sure it's such a great idea.
Is the primary reason for you changing course/uni just to move out? Or is there some other reason?