Rung up today, and had a natter with someone from Student Services, which has created a lot more clarity, as have the replies to this thread - Thanks for all the responses guys.
One thing that I have realised is that the courses on the OU are completely unique to any other qualifications at the first two levels, and are neither equivalent to GCSEs or A Levels.
I am actually wanting to start this year, despite being slightly younger than the majority and this will hopefully mean that support (financially) will be easier.
I will update on my progress.