It was under warranty, they fixed that problem under warranty. Are you saying they have no obligation or responsibility towards their own fix?
Correct - the warranty on the fix ends with the expiration of the vehicle warranty. It does not extend the warranty. Thats how it works with everything from cars to washing machines.
I really do not see where the confusion here is.
What are you asking us? To comment on the specific issue in question, or to agree with you about how horrible Ford are in general when selling new diesel cars to people who live on a small island?
Is it even the same fault thats reoccured? Didnt you say it was the turbo the first time?