Bring SN from US to UK

[CordyAllBlue]

Let's say I'm in the US and I've managed to get some pure enough SN.

how would one go about getting out of heathrow with it?

 

[Symbiote]

It's not an illegal drug so drug sniffing dogs won't pick it up. You can stash it in your luggage, not your carry-on and it would be safe. I carried worst substances in my luggage to Europe. May want to take the labels off and slap your own label and call it sand.