Based on that fixed/flexible service link I should get away with three services even if I keep the car for 4 years.
1st service (oil service) – at up to 18,600 miles or 24 months
2nd service – at up to 18,600 after the previous service or when your car is 48 months old.
3rd service – at up to 18,600 after the previous service or when your car is 72 months old.
Might get away with two if I never accelerate or brake!