Yes, and you might get money off. As a UEL graduate, you could get up to 25% off your postgraduate fees through the Alumni Scholarship. How much depends on your grades.

You'll still need to fill in a new application. If you don't need a visa, the fast-track form is the quickest way. Try to apply 3–6 months before you want to start.

You can also switch to a different subject. Lots of courses accept people from other backgrounds, though some have specific entry requirements.