Sadiq Khan: I'll be best London mayor

During the campaign Tooting MP Mr Khan distanced himself from former mayor Ken Livingstone and said he wanted to be "a Muslim mayor who stands up for Jewish rights".

"A strained relationship with one of London's most important minority communities is unacceptable," he had said.

In June Mr Khan co-sponsored an early-day motion in Parliament praising the efforts of campaigners to ban a neo-Nazi protest planned for the heart of the north-west London Jewish community.

Earlier this week Mr Khan issued a Rosh Hashanah message, wishing Jewish Londoners "peace and good health, today and all through the year."

Writing during the campaign, he acknowledged that the Jewish community had "shown its dissatisfaction" with Labour at May's general election and in 2012 when Ken Livingstone was beaten by Mr Johnson.

He promised to be the "best mayor that Jewish Londoners have ever had - the strongest possible champion of your community", but added: "I don't expect Jewish Londoners to rush to re-embrace Labour - trust has to be won back once it is lost."

Mr Khan also pledged to combat antisemitism in the capital, not to discuss foreign issues, and work with Jewish charities.