My Ed30 was 4 years old last month and only covered 16,000 miles but the cambelt & waterpump was duly changed per the recommened time scale.
Although I dont agree leaving it 120k, if it says that in your manual the normal wording on warranties is that you follow your service regime to your car service manual,so technically it should be covered !!!
Although like most have said it should be done, for peace of mind if nothing else.
Hope it works out favourably for you.