assist with identity and service schedule

[Morgan]

Hi, I believe my Berlingo (1.9 diesel) is an early 03 (mk2) model despite being on an 52 plate. Is there an easy way to verify this(other than the manual that came with it saying it is)?
Having done that I have two further questions.
1. simply, how do I reset the trip meter please?
2. Less simply, It had a full service almost 10 000 miles ago (brake fluid and filters and oil etc)and the cambelt and water pump were done at the same time, all by a Citroen main dealer before I bought it.
It is now due a service which I intend to do but I need a little advice.
I have a Haynes manual and above average mechanical skills but the manual lists services according to mileage so I am unsure which to do. Logically I am thinking that it should get a 10 000 mile service but I just don't know.
It is a 1.9 without a turbo and it is just under 134 000 miles.
Any advice will be greatly received.