Under Sale of Goods act the supplying dealer is liable for such issues for 6 months. Such faults are deemed to have been present at sale and the dealer would have to prove they were not. Do not involve other garages. The OP using "recently" and referring to a week ago suggests they might be trying to buy a warranty after the failure. If so trying to claim is both uneccessary and fraudulent. Apologies if the warranty was bought before the failure but the vagueness raised my suspicions.

There was a recall on these, to replace an oil feed pipe to the turbo. I would be checking to see if yours was one of those affected and if the work was done. Ring your local Vx garage and ask them, they will know from the reg no.

Unlikely Vx will want to help you out though, not without any service history.

And before you go trying to lay the blame at the dealers feet and quoting all that SOGA talk you need to know EXACTLY why it failed and how. You cant expect them to pick up the pieces if you have let it run low on oil or filled it with diesel or if its done more miles than the Ark Royal and died of natural causes.