Although Benjamin Disraeli had been born a Jew he had converted to Christianity serving Queen Victoria as her Prime Minster. Although there was no bar to Jews being elected, Lionel de Rothschild represented the City of London from 1847 but could not take the oath which said “on the true faith of a Christian”. It was not until 1858 that the oath was changed and Lionel de Rothschild became the first Jew to sit in the British Parliament. There have been Jewish MPs in every Parliament since, and appointed to almost every major office of state.[4]
Initially, those MPs were drawn from the upper echelons of Anglo Jewry, often referred to as the Cousinhood. Until 1874 the vast majority were elected as Liberals, until Saul Isaac was elected as the Conservative member for Darlington. Since MPs at this time were not paid a salary nor given allowances, it was necessary for them to be independently wealthy.
The rise of the Labour Party in the early years of the 20th century increased demands for the introduction of a payment to MPs.[5] Lloyd George, then Chancellor of the Exchequer, said “The only principle of payment in the public service is that you should make an allowance to a man to enable him to maintain himself comfortably and honourably, but not luxuriously, during the time he is rendering the service to the State.”[6] So it was that, in 1911, MPs were granted a salary of £400 a year, a salary which remained unchanged until 1937.
Aspiring Jewish politicians were now able to stand for Parliament. Huge numbers (approximately 250,000) of Jews from Russia and Poland, came to Britain between 1880 and 1914, changing the makeup of Anglo Jewry. The 1905 Aliens Act, supported by most of the Jewish MPs, slowed the immigration, but it was not until the outbreak of the First World War that the immigration stopped completely. No longer did the Cousinhood, who supported primarily the Liberal or to a lesser extent the Conservative parties, have control of the community. Large numbers of immigrant Jews were now joining Unions and supporting the Labour Party.



































