Hi, Your situation is very common btw! Im studying Optometry at City Uni London and when i applied I remember that they had no places in clearing. To tell you the truth city doesnt do clearing for Optometry... but on the day of your results just ring them to ask.. but do this instantly when your results are in your hands. Then, if i was you, i would ring Bradford since they usually have places left for clearing and its not a bad Uni.
Hence if you dont get that place for that med thing.. or you decide not to go for it, then apply for Optom as suggested. But, have you considered Pharmacy.. since they have loads of places left in clearing! My sisters do it and, believe me, theres a lot of money involved and its a pretty relaxing job, unless your the manager! lol.
Hope I've helped, but please ask if you find that you do have a question to ask. x