The Chief Rabbi Lord Jonathan Sacks and Holocaust survivors took part in a candle lighting ceremony on Sunday in Hyde Park to remember the Holocaust.
Survivors and their children and grandchildren lit candles to remember those who were murdered in the Holocaust at the event to mark Yom Hashoah.
The shofar was sounded and a minute's silence was observed.
The Israeli ambassador to the UK Ron Prosor said at the ceremony: "We the Jewish people are a nation of survivors. The state of Israel is a living, breathing monument of our survival. Today there are those who continue to threaten our destruction. Even at the United Nations, president Ahmadinejad shamelessly promotes the evils of Holocaust denial. We can never allow malicious, evil and extreme ideas to remain unchallenged.
