JAILED Biafran separatist leader Nnamdi Kanu's family lost a legal challenge against the British government in a London court over his continuing detention in Nigeria. Kanu's brother, Kingsley Kanu, brought a judicial review against Britain's Foreign Office over its alleged refusal to acknowledge that Nnamdi Kanu, who holds Nigerian and British citizenship, was the victim of extraordinary rendition from Kenya to Nigeria in June 2021. Kingsley Kanu's lawyers argued that the Foreign Office should reach a conclusive view on whether his brother was the victim of extraordinary rendition in order to properly assess what steps to take to assist Kanu.…