There is nothing preventing the UK from taking advantage of the talent pool, supply chain, and consumer market of an equally large economy in their chosen field. Except maybe the UK itself.
National borders are as important as you choose to make them. Small countries have always relied on diplomacy and trade to be successful. The UK just needs to accept that it's one small country among many, and start acting accordingly.
Because Shenzhen has access to the entire talent pool and supply chain and the consume market of China to support its development.