Yes, however there are exceptions, first you have to pay extra money for the shipping, but you also most likely will have to pay taxes of fees on the import. Normally under like $50 is free but if its like a good gpu be ready to fork over a chunk of change to get it. Not sure if the uk is like that but most countries are.
I would think if it is shipped from a friend not a biz they wouldn't even open it to see what is inside.
They never open it, even if it's shipped from a business.
When you ship internationally, you fill out a form declaring the contents of the package, and the value of the goods. I would assume it's x-rayed or something before it leaves the country.
Keep on folding!!!