suspension rattles on a Octavia 1.6 2011

Hi

I've a 2011 1.6 approx 90,000 miles and the front suspension has started to rattle.

It started a while ago but I was more concerned about the front wheel bearing which was shot.

Changed the bearing on both sides even though it was the drivers side that was worn. Replaced front pads and discs as the discs were worn

Noise is coming from the footwell area , behind the dash, mostly passenger side occasionally heard from  the drivers side.  Seems to get louder the longer it runs. (?)

The rattle I thought would be the anti- roll bar link . Changed those and rattle still there. 

 Took off the underbody plastic covers thinking maybe something in there but no.  Filled parts of the heat shield with expanding foam and round about fuel pipes.  No change.

No wear on the front struts but had a slight misting round the seals so changed them both and renewed the top mounting bearings 

Getting desperate now so removed the inner wings in case something had fell down and was rattling against the body but nothing there. 

Unbolted the anti-roll bar links to see if it was the anti-roll bar bushes but still the rattle was there. 

The rattle is there whether the engine is on or off,  whether or not in gear  or just freewheeling /coasting downhill.  It just needs a slightly rough/worn surface  road to set it off and on the main roads unless a I hit a pothole  its quiet as a mouse.

The subframe bolts seem tight enough. No movement in the steering rack track rods.

The next thing will be the lower track control arms .

Anyone know of anything else that I haven't changed could be causing the rattle ?  Any suggestions/ experiences with rattley front suspension would be most appreciated