Yes, this is possible in some circumstances. To do this please get in touch with the department in charge of the course you wish to transfer into (you can normally find their contact details on the relevant course page).
If there are spaces available and compatibility between the two programmes (check the Academic Calendar to see what modules are in each programme) then you may be asked to complete an application form.
If you are a first-year who has just started, check out the Change of Course process instead.
If you cannot find the answer to your question, or if you need additional support, contact us: