Prime Minister of the United Kingdom senior order of chivalry, the Order of the Garter. The practice of creating a retired Prime Minister a Knight (or, in the case of Margaret Thatcher, a Lady) of the Garter (KG and LG respectively) has been fairly prevalent since the mid-nineteenth century. Upon the retirement of a Prime Minister who is Scottish, it is likely that the primarily Scottish honour of Knight of the Thistle (KT) will be used instead of the Order of the Garter, which is generally regarded as an English honour. Historically it has also been common for Prime Ministers to be granted a peerage upon
Minister of Foreign Affairs (New Zealand) the field. Several New Zealand Prime Ministers including Peter Fraser, Walter Nash, Keith Holyoake, and David Lange held the External Affairs portfolio. The most recent Prime Minister to do this is Helen Clark in 2008 as Acting Minister, and prior to her was Mike Moore, in 1990. Thirteen Prime Ministers have served as Foreign Minister for all or part of their terms. New Zealand has had 27 foreign ministers (regardless of exact title). The longest-serving was Keith Holyoake, who held the post for the duration of his 11-year premiership. The second longest-serving, and the longest-serving who was not also Prime