I would suggest that you complete this year and then transfer. You need to speak to the relevant people at your uni and you will also need to e-mail prospective uni's to make sure that they have a place for you.
im taking a level exams, alongside my degree (engineering) reason being that if i improve my grades then i will have more options of uni's.
im very confident that i can improve my grades, would it be possible to apply to uni's on the a-level results day even if it means relying on clearing places?
also should i contact each university i want before applying to them?
or should i just apply like the first time?