Anyone had experience of noise from the rear seat area like a tennis ball rolling inside a cardball box its kinder getting to me.

 

Well, I would say you need to get someone to sit in the back seat while you drive around, in order to localize the sound. It could well be that there is something (say) under the rear seat. But before you start taking the interior apart you need to locate the area involved.

Noises can be tricky. On a non-Jag car, I had a wind whistle I thought was coming from the lower side of the windshield, but I had someone drive while I sat in the passenger seat and moved my head around. Turned out to be at the top of the windshield, behind the rear view mirror.

So identifying the source of these noises can be tricky.

 

Sounds like the fuel pump noise which is mounted behind the backseat on the driver's side, if this happens only right after startup then it is normal (albeit unique to the jag)

 

Thanks Boomer, odd thing it turns out to be a shocker, if the car is driven for a while it go,s
away.