Right here we go. I got the car back this evening (sorry about the dark pic) it has had a full stainless system made up and get this, a diesel sports cat, which is a first for not only the Fabia but Milltek.
So i've got a free flowing exhaust but still retains a cat so there are no back pressure worries.
The exhaust note is a bit deeper without being boomy or intrusive and it seems to have free'd up a bit top end aswell which is a bonus. The Hybrid turbo goes on Monday evening and we will remap it sometime next week.