"Other eBayers should be allowed to vote for it so that the message eventually reaches the eBay team."
Ever since 2010 in this country U.S.A. when China based sellers were first allowed to sell on this site, people have been asking why they or other international or individual sellers cannot be blocked. I posted more complete answer about that, in a topic from yesterday (Link below). Since I joined these boards about 21 years ago, there have been hundreds of topics asking for a way to block foreign sellers.
None of them are ever seen by people high enough up in ebay management who could make a change. The reps who do post on the community may pass suggestions up the chain, but upper management rarely listens to the members. The direct suggestion box was locked and the key hidden back in `08.
Basically it boils down to this. Sellers who are ebay's only "customers" pay a fee to have their items posted on ebay's sites. If ebay were to offer a permanent block of international sellers, then many sellers would leave the site, since ebay guarantees their items will be viewable in countries they will ship to.
Since you are located in the U.K. how many times have you seen "Registered as a business seller in the U.K." on a seller's profile? Many of those sellers are based in China but registered in the U.K. so even with a permanent U.K. Only filter their items would show up.
https://community.ebay.com/t5/Buying/Blocking-a-Seller/m-p/34519142#M490644
"THERE IS NO SUCH THING AS FOOLPROOF, BECAUSE FOOLS ARE SO DARNED INGENIOUS!" (unknown)
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