Hi David,
The timing belt change is 82,000 miles if my memory serves. So you should be fine for a good while yet - just note that it has been changed "too early". Which means it'll have to be changed "too early" for the next time too. (64000 + 82000 = 146000).
The dCi engine has got a normal service interval of 18,000 miles, as opposed to 10,000 miles compared to the 115bhp earlier engine.
This should all be quite clear in the manual tho'...
(I hope you got the owners manual..?!)