Former British prime minister Margaret Thatcher and husband Dennis (right) during the handover in 1997. Photo: AFP

Britain made 1984 vow to Hong Kong on Sino-British joint declaration, declassified documents show

Former British PM told top city officials London would confront Beijing over any post-handover breaches of Joint Declaration, documents show

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Former British prime minister Margaret Thatcher and husband Dennis (right) during the handover in 1997. Photo: AFP
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