A group of protesters gathered outside the Hatzola offices in Golders Green as Keir Starmer arrived for a visit.

They held signs and chanted offensive slogans. Police maintained a strong presence.

As his car entered, protesters jeered and shouted “traitor.”

The volunteer Jewish medical charity had faced an arson attack last month, which destroyed ambulances used to serve all communities in the area. Their paramedics also responded to the stabbings reported the previous day.