Surly it cant be a puncture it BOTH of them? plus im talking about 2weeks of using the car everyday to lose about 10psi

 

the alloys themselves? or valves leaking. have them checked out.

 

oh btw it was recently happening to one of my rear tyres on my mk6 and it eventually went flat and without knowing i drove it a 'bop' on a speed bum i completely bent and cracked the alloy so i got to get new set now.

 

Unless someone is letting them down by 10psi then obviously it is a leak

 

I had a cracked alloy not that long ago. Worth a look.

 

Did you have the tyres changed recently? Sounds like someone messed up with fitting the valves or didn't fit the tyres properly and there leaking at the tyre beads. Like you say, kinda unlikely to have punctured them both.
Best way of knowing for sure is dumping them in a bathtub (with water obviously ) or something likewise to see where they're leaking.

There are more possibilities like you've bent or cracked both rear alloys on a curb/speedbump etc.

 

The tyres were fitted at a ford dealers about 5months ago.

Bent/cracked both rear alloys on a curb or speed bump? no im the only one who drives it so i know their not damaged from driving it

 

Its got its MOT soon so ill let the guys there have a look at the same time, i dont have time for jacking my car up and taking wheels off etc, plus most days its dark by the time i get home