LONDON - More than 12,000 British Muslims are expected to attend a global peace conference at Wembley arena in London on Saturday to mark the 10th anniversary of the Sept. 11, 2001 attacks, organizers say.The "Peace for Humanity" conference, organized by Minhaj-ul-Quran International (MQI), a broad based Islamic organization, will issue a global declaration for peace calling for an end to terrorism and extremist violence.The event aims to launch a drive to secure one million signatures in support of the declaration, as well as host a full day of speeches, entertainment, and multi-faith sessions, including a collective peace prayer for all main faiths.Muhammad Tahir-ul-Qadri, a leading Islamic scholar and founder of MQI, is set to host the event, and will call for "peace, tolerance and respect to all people everywhere," organizers said.