The audience heard pre-recorded messages of support from, amongst others, Prime Minister David Cameron, Deputy Prime Minister Nick Clegg, opposition leader Ed Miliband, United Nations Secretary General Ban Ki-Moon and Archbishop of Canterbury Dr Rowan Williams.Thousands of Muslims have attended a peace conference in London which has condemned terrorism.
About 12,000 Muslims gathered at Wembley Arena for Islamic group Minhaj-ul-Quran's Peace for Humanity Conference.
The conference launched a campaign to get one million people to sign an online declaration of peace by 2012.
Dr Muhammad Tahir-ul-Qadri said the conference would send a message that 10 years of extremist activity should end.
'Love and smiles'
Dr Tahir-ul-Qadri is the founder of Minhaj-ul-Quran and gave the keynote speech at the event, despite having received death threats after issuing a fatwa - or religious ruling - against terrorism last year.
The cleric was repeatedly applauded during his address in which he said the "terrible" 9/11 attacks in the US had distorted perceptions of Islam over the past decade."
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This is by no means the first time that muslims have condemned terrorism, no doubt their detractors will be out in force trying to pretend that it is.