AU price will follow UK price, a german listing also exists but dont rely on it for direction.
AU market rarely leads the UK price and has been often under the UK price. This makes for good buyting ops on the ASX.
Volumes traded are much higher in the UK and the CFU product line is targeted at the euro market.
Bit harder to buy large volume on the ASX, but plebty of small opportunities if your patient and watchful.