There is really no need to decide between the three-year BSc and four-year MPhys when you first enrol. Unless you are certain from the outset that you wish to study for a three-year BSc degree, we will normally recommend that you enrol initially for the four-year MPhys which is our `top of the range' offering. If you subsequently wish to transfer to a three-year BSc degree, this is straightforward at any time up to the end of second year, as both degrees are the same up to this point. You can also transfer from the three-year degree to the four-year degree, but only during the first year.