New update!!
My supplier contacted the belt manufactuer being gates yesterday and apparently they've had loads and loads of these fail on the connects so they bought engines in to test themselves and found a massive fittment fault. Turns out that after fitment and the engine has been turned six times there is a certain position the automatic tensioner must sit at which is not illustrated properly in the autodata 2006 timing belt book in which I used when fitting the kit, hence this is the reason for the failure. I feel robbed in a way as gates have all this information to hand as they've emailed it to my supplier with illustrations etc of the correct position but they do not even put a note or anything in with the kits and fitting the kits to the word of the autodata appears not to be correct.