Can I transfer from a top UK university to a US college? What are my chances of getting in?

If you start at any university, then you would be a transfer student when later applying to universities in the US.

Did you apply to schools in the US? If so what happened? If not, then is this based on a late change in plans or a recent greater understanding of what is involved in a university education?

Have you thought about taking a gap year?

What is your total budget for all of this through getting your bachelor’s degree?