Hi, thanks for all the responses so far
The problem I am finding at the moment is that living in the UK healthcare is a little different. We have the National Health Service which is basically a free healthcare system (I won't go into it too much), so when I had physiotherapy before it was effecitvely free. I had started physio because my knee was making it too painful to walk or get around. After 6 months my knee was fine to walk on and doesn't give me day to day pain, which is why my physiotherapist signed me off. My knee is now fine, unless i'm putting unnecessary strain on it which a lot of common excercises seem to do. Because of the NHS if I wanted to go back into physiotherapy I would need to be referred there by my doctor, who is unlikely to refer me as my knee isn't really a problem most of the time now. So to get physiotherapy without referal I would have to go private, which would probably cost more than I can afford right now, considering my student debts.
My back is really the more pressing issue at the moment and as I mentioned I am waiting for a doctors appointment, and will see what happens with that.
As I mentioned before the excerise I am concentrating on currently is swimming, but this is not always practical, as often the times I have available to go coincide with sessions where the pool is not available. I will be continuing to swim whenever I can.
I like the idea of walking, A lot of my friends jog, but my physiotherapist pretty much told me not to, especially on the roads. I think I will try walking more, but I will have to drive out to find somewhere flat, as I pretty much live on the top of a hill surrounded by valleys! hah.
I will of course welcome further suggestions. I am really looking for excercises that I can do at home or at a gym that do not require a lot of special equipment or costs, and that will help with my overall fitness as well as posture and riding ability.
~The most important lesson my horse ever taught me is how much I have left to learn~