Prime Minister John Key will be armed with a message of thanks from the New Zealand people and a gift of cheese when he visits Buckingham Palace, after being summoned for a meeting with the Queen.
Mr Key on Sunday took part in the Diamond Jubilee pageant marking the Queen's 60-year reign, travelling aboard the Sarpedon with other Commonwealth heads of state in a 1000-boat flotilla on the Thames.
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While the procession was designed to be a celebration, Mr Key said the chatter on board was at times quite serious.
"[British Foreign Secretary] William Hague was on our boat so I was sort of catching up on a few issues with him. General feeling is the same we get over here, which is uncertainty about what's happening on the economic front in Europe," Mr Key told reporters.