not sure if the other models are the same but on the 1.2 16v you MUST do the waterpump!! mine was done just over a year before i got it, (and about 20k miles) and it snapped due to the waterpump bearing seasing up (had been leaking for ages!)
worst part was i was in the middle of a 2 car overtake at 6,000rpm in 3rd gear lol just died on me and had to pull back like a complete dick head on an empty straight.
stripped the head off it, 8 bent valves, not good. £150 for a new engine and it was back on the road lol