Moves by the Hong Kong Monetary Authority to introduce a U.S. dollar-clearing system in stages this year suggest a possible slow move toward at least partial dollarization.

CNN: Intelligence: The Dollarization Debate Again

An important recent development is that the Hong Kong Monetary Authority has significantly extended the operating hours of the RMB payments system, so that RMB transactions carried out in London during the European working day can be processed and settled speedily.

BBC: Boost for City's China trade