[GrantA]

I put a small lump of blue tack just above the hazard light switch and sit my iPhone 6+ (marked in blue) sideways on top of the ridge above the CD player. It's a cheap option and works for me. Being in the middle it also allows my passenger - if there is one - to tell me when the next turn will be coming up.

I've used your photo Pete so you can see the ocation and yes it does cover the hazard light switch but if I have to turn that on I'm not going anywhere anyway.