UK Home Secretary Theresa May has reassured the country’s Jewish community that the authorities will do whatever is needed to fight anti-Semitism.

May announced that additional protective security arrangements will be implemented, and urged the country to fight anti-Semitism.

She was speaking at a gathering in London organised by the Board of Deputies, the largest body representing Jews in the UK.

The gathering was part of a service to commemorate four Jewish people killed at a kosher supermarket in Paris earlier this month by the attackers responsible for the Charlie Hebdo murders.

“Jewish people have been a long important and integral part of this country. We cherish the enormous contribution you make not just in the past but today and every day," May said.

Since the attacks in France, the security has been tightened around Jewish institutions in the UK.

The UK must redouble its efforts to "wipe out anti-Semitism", May said.

"I never thought I'd see the day when members of the Jewish community" would be "fearful" of staying in the UK, she said.

"I know that many Jewish people in this country are feeling vulnerable and fearful and you're saying that you're anxious for your families, for your children and yourselves,” May said.

The British police have said there is "heightened concern" about risks to Jewish people.

They confirmed a security review was being carried out following the shootings in France.

Although security has been intensified in the UK, with armed police deployed around government and Parliament buildings in central London, the terror threat level remains “severe”, meaning a terrorist attack is highly likely.