Just got off of the phone from a sales adviser.
I have been quoted Ł400 for an extended warranty and I confirmed with them that the DSG box is covered. That is for their Network rate i.e. not done by a main dealer (that is fine as I'll use JKM in Portsmouth).
He also offered me an extra month and said that if I take it out whilst under Audi warranty then the normal 90 days Wear and Tear clause will be waived.
So everyones thoughts, either way as I'm still deciding.
Less than Ł40 pcm isn't bad for piece of mind.