"UK law is clear in that ownership has not transferred to the recipients and that the items should be returned."

Citation?

"but you are required by law to return the product if they request it. "
no, you are not.
from USPS( http://about.usps.com/publications/pub300a/pub300a_tech_021.htm ) bolding done by me:
A company sends you a gift in the mail — a tie, a good luck charm, or a key chain. You didn’t order the gift. What do you do? Many people will feel guilty and pay for the gift. But you don’t have to. What you do with the merchandise is entirely up to you.

If you have not opened the package, mark it “Return to Sender.” The Postal Service will send it back at no charge to you.
If you open the package and don’t like what you find, throw it away.
If you open the package and like what you find, keep it — free. This is a rare instance where “finders, keepers” applies unconditionally.
Whatever you do, don’t pay for it — and don’t get conned if the sender follows up with a phone call or visit. By law, unsolicited merchandise is yours to keep.

" unless (or until) the provider requests that you return it. "
false.

Anything you didn't ask for is unsolicited by definition.
dumb ass.

~~~~~~~~
http://about.usps.com/publications/pub300a/pub300a_tech_021.htm
A company sends you a gift in the mail — a tie, a good luck charm, or a key chain. You didn’t order the gift. What do you do? Many people will feel guilty and pay for the gift. But you don’t have to. What you do with the merchandise is entirely up to you.

If you have not opened the package, mark it “Return to Sender.” The Postal Service will send it back at no charge to you.
If you open the package and don’t like what you find, throw it away.
If you open the package and like what you find, keep it — free. This is a rare instance where “finders, keepers” applies unconditionally.
Whatever you do, don’t pay for it — and don’t get conned if the sender follows up with a phone call or visit. By law, unsolicited merchandise is yours to keep.
~~~~~~~~~
Gift - something bestowed or acquired without being sought or earned by the receiver.

Gifts don't have to be intentional

no, The would be fighting to get what they ordered. It's the companies responsibility not the consumers.

Yep, I know. I remember when the US post office used to advertise that, with an Eskimo getting a oscillating fan.

And this would count.

"No need to look down to see where the mouse has gotten to on my desk."
was this an actually problem for you? I mean, wow, it might be in a 2 foot square.

"Big fat ball that's always where I expected. Like all the balls in my life."
In your mom?

funny, but I think this might have been funnier

Paradoxes are cute little wiener-doxs!

I don't want to live in world where the end party is responsible for the errors of a company. Assuming the end party didn't intentionally commit fraud.

Otherwise we end up back to a point where companies would just send stuff out and demand payment.

If you can't tell us, why did you reply?

Public air ways is one of the places it does belong.

if you are paying it, it isn't ridiculous.

It's more like XBMC with gaming..and apps, cause it will stream all your media and play steam games.

no, it is not.
It might not be real, but it does fit with the current scientific understanding. I suspect a simpler solution will be found.
Then everyone will slap their forehead and say 'U=ET cubed! of course it's so trivial!