As far as I'm aware all US medical schools require you to have studied at least one year of science classes in the US at an accredited US college; as in, parallel to the standard premed curriculum, even if you took all the premed classes in another country, you'd still need a year of studying sciences in the US. Since UCLan is not such a place, you wouldn't meet that requirement.
Beyond that the standard premed curriculum in the US isn't realistically possible to cover in almost any degree in the UK. As normally they expect 2 consecutive semester physics modules, 2 such biology modules, 2 such "general" chemistry modules, 2 such organic chemistry modules (sometimes you can replace the second one with a biochemistry module), sometimes a biochemistry module on top of that, and often they also require some formal academic writing module(s) to have been covered, and sometimes 1-2 semester mathematical methods and/or statistics modules (in the US this would be 1-2 semesters of calculus, sometimes replacing the second semester with statistics is acceptable). Sometimes they recommend or prefer a semester of psychology or sociology as well. These also all more or less correspond to areas you need to have background in for the MCAT.
So you'd almost certainly need to do a postbacc premed programme in the US (or a masters degree which will let you take the requisite premed classes you're missing which is probably not many of them) which is very expensive and due to the sequencing of classes almost invariably will take 2 years there, plus a "glide year" where you end up with a year out while you apply because you won't have been able to realistically apply during the second year (as you won't have covered all the material for the MCAT by then).