[Considered1]

Some good advice from my dealer service chap this week.
Basically they have a plan A and a Plan B, both same price but plan A Covers more but is only for cars <5yrs and <60,000 miles, after this you would have to take plan B.
So advice for me at 3yrs and 40k is to extend by 1yr £399 so that next year I'll still be under 60k and to then extend for a further 3 yrs (max) all on plan A.