Jeremy Corbyn is facing fresh questions over his pledge to stamp out anti-Semitism in Labour after an activist accused of repeatedly publishing anti-Semitic tropes was selected as one of the party’s candidates in next month’s council elections.

The Telegraph can disclose that Sameh Habeeb, who founded and edited The Palestine Telegraph, a journal criticised for publishing conspiracy theories about Jews, is being put forward as a Labour council candidate in Northwood, north-west London.

The disclosure comes as the Labour Party faces a barrage of questions of its response to anti-Semitism.

One of Labour's biggest private donors launched a bitter attack on the party's failure to deal with the problem under Mr Corbyn, while it was reported that 12 senior staff working for the Labour leader and shadow chancellor John McDonnell were members of social media groups containing anti-Semitic and violent comments.

Mr Habeeb, who has spoken at several events alongside Mr Corbyn, was formally selected as a candidate last weekend, despite past concerns raised by the Jewish community about his actions.

They included concerns about a series of anti-Semitic articles published on The Palestine Telegraph website while he was editor, and accusations he “hint[ed] at the well-known canard about Jewish or Zionist media control” when he stated in a 2010 interview about Israel: “I think you have to ask yourself who controls the media.” The Palestine Telegraph is no longer online.