Hi everyone, 

I've recently bought a WRX wagon 2005, very tidy has been looked after. 

I have noticed after driving the car, whether it's for 10 minutes or an hour, without excessive braking, both of the front brake discs are very hot. I don't think the brakes are sticking.

Any ideas what this could be? 

Cheers. 

If not calipers sticking then your disks could be warped. It can only really be sticky calipers or warped disks due to sticky calipers. Someone else may be able to come up with another reason.

Possibly wheel bearings? Any noise?

There's no noticeable noise, just the discs are boiling hot

The Subaru 4 post are fairly prone to seized or sticky pistons ,especially if the piston dust seals are damaged or the cars been sat a while .

Warped discs will normally give pedal judder or you'd feel it at low breaking speeds. 

You might find a clean ,check all pistons are moving freely, re grease and re assembly might solve your problems