Dont know about those unis but I applied to 5 unis with a 2:1 in sports science and 1 days shadowing experience and got 1 straight acceptance and 4 interview offers, so your chances on that basis are fine...

I had a part time porters job in a hospital at the time (read: eating biscuits in an old folks home) and i milked it for all it was worth in the personal statement - thats the key. With your qualifications they know you are capable of the work, you just have to convince them you a) know what you are letting yourself in for and b) are a suitable person. Physio is a social profession that needs a lot of people skills, so make it clear that you have them and you're on the right lines