Chancellor George Osborne told students at Peking University that investment in each other's countries should not be seen as a threat but a great opportunity.
Boris Johnson reiterated this view telling ITV News that international investment should be encouraged.
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Shocked neighbours have told of their fear and paid tribute to a "nice lady" found stabbed to death at her home in Muswell Hill.
The deputy leader of far-right group Britain First has been arrested in London over a speech made at a rally in Belfast this summer.
Captain Mike Green, a senior flying instructor, was piloting the two seater helicopter involved in the crash.