Any one know what skoda suggest when it comes to changing the cambelt and water belt?

Not sure about other models, according to the handbook, my old '07 TFSI VRS was every 4 years regardless of reaching the recommended change-mileage which was something like 60-80000 miles. Do a search on here and you'll find it. You will of course also find lots of posts disregarding the time/mileage limit, which is fine..... until the belt snaps. 

Earlier of either 4 years or 80k for bkd tdi