Many thanks for all your replies.
A_A regarding my Maths GCSE I achieved a grade C (9 marks of a Grade B), by no means excellent - but its a pass.
c130jbloke, I totally agree, now that I have experienced what the tests are like, and I fully appreciate that OASC will be longer and Harder, I am now in a position to continue with education and complete my A levels.
So fingers crossed for the future, and thanks for the supportive comments, really very much appreciated.
All the Best
Nathan