Is the worst product ever conceived.
Paul, they do Zymol autobath. Use that.
I use muc off ubershine thats ph neutral and wax friendly. Tesco do it
I use this also. Screwfix had 500ml bottles for £1.50
Yep its where i stock piled mine from lol.
They no longer stock it
I'm using this Zymol
http://www.halfords.com/motoring/cleaning-products/shampoo/zymol-natural-car-wash-1-42l
Although i usually polish/wax after anyway - smells awesome, good foamage too mate