Thank you very much for your comprehensive answer.
I have discovered that the system is hydraulic not a cable, so I have dropped it off at a local garage and when I get the cost (porobably on Monday) I will make a decision whether or not to have the job done or scrap it.
I only purchased the car in May 08. I Got the cam belt replaced by Renault only for it to break about 8 weeks later and the radiator was replaced. For an initially cheap car it has cost me a fortune in repairs I will never buy a Renault again, it has been the worst car I have ever owned (in terms of reliability).
Chester Drawers, December 2008