religious leaders on 17 September in London, Pope Benedict referred to, "situations in some parts of the world, where cooperation and dialogue between religions calls for mutual respect, the freedom to practise one's religion and to engage in acts of public worship". This includes, said the pontiff, "the freedom to follow one's conscience without suffering ostracism or persecution, even after conversion from one religion to another". Radio and television coverage on the second day of the four-day visit focussed on the arrests of six non-British nationals linked to a possible terror plot aimed at the Pope. It is the first State visit by a pope to Britain. Benedict referred again to interfaith relations when he met the Archbishop of Canterbury, Rowan Williams, the spiritual leader of the (Anglican) Church of England and head of the worldwide Anglican Communion.