The number of anti-Semitic incidents in the United Kingdom increased by 36 percent in 2016, according to a report by Community Security Trust (CST), an organization dedicated to the protection and defense of British Jews.

In its 2016 Anti-Semitic Incidents Report, the group said there were 1,309 incidents compared to 960 incidents in 2015.

“While Jewish life in this country remains overwhelmingly positive, this heightened level of anti-Semitism is deeply worrying and it appears to be getting worse. Worst of all is that, for various reasons, some people clearly feel more confident to express their anti-Semitism publicly than they did in the past,” CST Director David Delew said Thursday.

The report points to a number of factors driving the increase in anti-Semitism, including Israel’s Operation Protective Edge against Hamas in the Gaza Strip in 2014; terrorist attacks on Jewish communities in Europe; anti-Semitism among U.K. Labour Party members; the perception of increasing racism and xenophobia following the U.K.’s decision to exit the European Union; and regular discussions about the problem of anti-Semitism in British society.

CST said that while those issues led to an increase in anti-Semitic incidents, they also made it more likely that such incidents would be reported to police.