I’m based in UK and when I rang HMRC VAT helpline they said I needed to fill in an EC sales list like I already do for Apple stating how much VAT has been paid by the companies so HMRC can still reclaim it. Here are the VAT numbers so you don’t have to hunt around.

Facebook Ireland IE9692928F
Google Ireland IE6388047V
Apple Luxembourg LU 20165772

Of course if they start paying us through the US offices again, we won’t need to fill in any EC sales lists as it will be out of scope.