If only 20kg and samples, you could airfright. I would guess it would cost under £200 delivered, with rates from HK about/under HK$20/kg at the moment, and you would get them in under a week.
If you use a FF, they will arrange delivery and should be cheaper than a courier.
As for ports, as the goods are LCL, you are restricted to where other people wat to move to, but what about Tyneside?
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