The Ahmadiyya Muslim community is celebrating 100 years of its establishment in Britain this year.
Up to 15,000 Ahmadiyya Muslims have taken part in Eid al-Fitr celebrations in London to mark the end of Ramadan.
Worshippers gathered at the Baitul Futuh Mosque in Morden, which is thought to be the largest of its kind in western Europe.
The Eid celebrations, following a month of fasting, lasted about two hours.
The movement’s leader, His Holiness Hadhrat Mirza Masroor Ahmad, gave a message of peace during a sermon that was broadcast live globally.
Some of the worshippers had to watch his address on television monitors in other parts of the mosque because the main prayer room was full.
Rafiq Hyat, national president of the Ahmadiyya community in the UK, said: “His Holiness has always encouraged all the various communities to come together in peaceful dialogue and try and achieve peace in this world through justice.