Yes, and its quite common for grads to apply for 5 year Medicine courses so the requirements for grads will be on the online course pages for each Uni. They will look at everything - degree, A levels and GCSE. Plus relevant work experience.
One example : MB ChB Medicine at Bristol, requires a 2:1 in a relevant subject and at least AAB at A-level including Chemistry at grade A and one other lab-based science subject at grade B or above, plus minimum five GCSEs at grade A to include Mathematics, English Language and two science subjects.