Your credit score is what it is - it can't be altered, so I can't see what Noddle can do to change that.
Any CCJ's stay on your credit file for 6 years, so they can't be changed as well. Personally I'd save my £30 per year and concentrate on trying to pay my current bills on time - phone bills, etc.
If possible, obtain small amounts of credit and pay them off on time and as quickly as possible, in order to minimise any interest charges - doing so will improve your credit score.