Gideon studied law at the University of Warwick where he became heavily involved in Jewish causes as President of the Jewish Society. He was elected Anti-Racism Officer for the student body and appointed to advise the two nearby police forces on hate crime. He graduated and returned to London in 2005.
In the summer of 2014, as fighting flared between Hamas and Israel and antisemitism surged in Britain, he joined Campaign Against Antisemitism. He was the principal organiser of Campaign Against Antisemitism’s major rally outside the Royal Courts of Justice calling for zero tolerance law enforcement against antisemitism. Gideon was elected Chairman of Campaign Against Antisemitism in autumn 2014, a duty which he performs as a volunteer.
Gideon has spoken at the House of Commons and given evidence to the House of Commons Home Affairs Committee. His work for Campaign Against Antisemitism has been publicly praised by Theresa May. The Algemeiner awarded him as one of the “top 100 people positively influencing Jewish life”, and the Simon Wiesenthal Center hailed him as a “Jewish hero who proves that there are still powerful ways to leverage democratic rules to serve justice and protect Jewish community”.
Gideon has worked in high-tech, commercial real estate and management consultancy. In addition to his charitable work for Campaign Against Antisemitism, he also serves on the board of the Jewish National Fund UK.