There is a discount shop in Cardiff called Home Sense that I think is connected to TK Max in some way. They had a couple of items also labeled 'hand made in London by glass artists', one was an elongated bottle vase the other a very chunky large vase both were signed. Each design was relatively generic and the discount price for each was around eighty pounds, original retail price advertised as four hundred pounds.
No paperweights there though apart from very basic Chinese production. Other glass stocked was made in Slovenia (nice crystal), Italy (some Murano), Turkey and China.