Does my SEAT Leon really need a cam belt change at 30,000 miles?

My SEAT Leon 1.9 is five years old in Nov 2010 and has only done 30,000 miles, but my SEAT dealership is advising I get the cam belt changed on my next service at around £355 (on top of the service and MOT cost). Is this advisable? And if so, is the price realistic? Is there anything else I should consider having done while the cam belt is being changed?
Standard SEAT edict. Best to change the tensioner and water pump as well.
Answered by Honest John on

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