The terrorism threat level in the UK has been increased by the government from "substantial" to "severe" - meaning that a terrorist attack is considered highly likely in the next six months.
It comes after two Jewish men were stabbed in north London on Wednesday in an attack the Metropolitan Police is treating as a terrorist incident.
The government said on Thursday evening that the increase in the threat level was not solely as a result of the Golders Green attack, but had also been "driven by an increase in broader Islamist and extreme right-wing" threats.
Wednesday's attack is the latest in a string of incidents targeting the UK Jewish community.
The last time the threat level was considered severe was in February 2022.
