Prince William has been pictured for the first time since he pulled out of King Constantine's memorial service at the last minute.
The Prince of Wales was due to give a reading at St George’s Chapel on Tuesday but was unable to attend the event due to "personal reasons".
Prince William called the Greek Royal Family to let them know regarding his absence.
No further details regarding the royal's absence were given but Kensington Palace did confirm that the Princess of Wales is doing well in her recovery from abdominal surgery.
During his appearance, the royal spoke of his and Princess Kate's concern regarding the rise of anti-Semitism.
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William joined a conversation with young people and Holocaust survivors during a royal engagement in London today.
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William joined a conversation with young people and Holocaust survivors during a royal engagement in London today.
The Prince of Wales received an overview of the Western Marble Arch Synagogue and the Jewish community it supports.
During his appearance, the royal spoke of his and Princess Kate's concern regarding the rise of anti-Semitism.
William said: "Prejudice has no place in society. I've said it before and I'll say it again.
The Prince of Wales received an overview of the Western Marble Arch Synagogue and the Jewish community it supports.
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"I want you all to know you can talk about it and your experiences.
"Both Catherine and I are extremely concerned about the rise in anti-Semitism that you guys have talked about this morning and I'm just so sorry if any of you have had to experience that.
"It has no place... that's why I'm here today to reassure you all that people do care and people do listen and we can't let that go."
The Princess of Wales is continuing to recover at her Windsor home following abdominal surgery in January.
Princess Kate is not expected to return to royal duties until after Easter.
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Today's engagement was originally planned to coincide with Holocaust Memorial Day last month and the Princess of Wales was originally due to attend alongside William.
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Princess Kate is not expected to return to royal duties until after Easter.
Today's engagement was originally planned to coincide with Holocaust Memorial Day last month and the Princess of Wales was originally due to attend alongside William.
However, the event had to be postponed due to Kate's significant operation which she is still recovering from.