Pretty sure i know the problem here as the fabia used to have the same problem

Water coming from under the dash into the drivers footwell

Guessing its just leaves blocking the water run off channel?

Quite possibly

Was going to suggest that.

Kool i shall get the plastic trim off snd start cleaning it out....

Do i have to take the wiper arms off to get the plastic off?

The the inner arch liners off too (front) as there is bound to be lots of crud in there.

Mud in the bottle of the wheel arch trims will be the ultimate cause of this. Slacking off the rear of the liner and clean out the compost with your hands. Then poor some water in from above, it should wash through the few remaining bits, and hopefully not appear in your drivers footwell.

Cheers guys....adds a whole new meaning to spring cleaning :p