Debate has raged over the extent to which New Labour has succeeded in incorporating an ethical dimension in British foreign policy. The assumption has been that New Labour at least changed the context of foreign policy by adopting a more moralistic language. However, there has been no attempt as yet to show this statistically. Using computer-assisted content analysis of Margaret Thatcher's, Robin Cook's and Tony Blair's foreign policy speeches, and assuming that Blair, as opposed to Cook, is the representative voice of New Labour, this research finds that New Labour has indeed changed the context significantly. However, this change did not occur until after the events of 9/11. © 2010 The Authors. Journal compilation © 2010 Political Studies Association.