Prime Minister John Key is getting down to the business end of his trip to Britain with a visit to No10 Downing St, and private meetings in the heart of the London financial district.
He and wife Bronagh are being hosted by British Prime Minister David Cameron at a private dinner along with Canadian Prime Minister Stephen Harper. They are all personal friends.
The euro debt crisis is expected to be high on the agenda before Mr Key departs for an appointment with Dr Mervyn King, the governor of the Bank of England, and meetings in what was his old stamping ground when he worked in the city for Merrill Lynch.
After joining the Queen's Diamond Jubilee celebrations on Monday, Mr Key travelled by train to Brussels for meetings with chiefs of Nato and the European Parliament.
He committed New Zealand to a co-operation agreement with Nato that is expected to last well after the Nato-led international force leaves Afghanistan.