Is intermittent and can’t recreate all the time
But is speed dependant. Slowing down to below 60 removes the droning.

Anyone else experiencing this?

Try closing then opening it at speed and see if that resolves it 2011 4.4 TDV8 Vogue SE Buckingham Blue with Ivory and clear glass = "Rory"
New Defender D300 90 on order so "Rory" will be going to a new home....!
1974 Series 3 Lightweight = "Millie"
My preferred specialist: www.glenrands.co.uk
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I had something like this, it turned out to be the external trim below the windscreen, the one surrounding the wipers.
The odd looking fasteners must hold this trim really firmly or it will drone and then echo through the internal air vents.
It is a speed dependant issue as the trim only vibrates when the air passing over it is at a certain speed.

You can get the clips on eBay.

Hope that helps.

Thanks Nick

Do you have some pictures of the trim you mean? Is it the clips that hold the wiper blades to the arms ?

Sure,

Photo attached shows trim below windscreen, it runs along the entire bottom of the windscreen.
The clip holding it is the grey circle you can see in the trim.

Have a look at Nut Job's YouTube channel -
This shows the whole problem and his solution in great detail.

Part code for clips is CYC000010. Rimmer Bros. sell them.

Good luck !

That’s the noise !

Thank you 🙏 for sharing