Ive got a 56 plate fabia mk1 elegance 1.9tdi and am after bigger brakes for the front, understanding i need different hubs also. Will octavia vrs hubs fit straight on with no messing?

No Octavia hubs or as they call them bearing carriers won't fit.

You need the parts from a vRS or 2.0

Part numbers and all this info are in the sticky 312mm thread in the Fabia technical section.

Cheers man, got offered a set of a friend and thought id read they dont fit thanks muchly!