Franklin studied for the law and was called to the Bar at the Inner Temple in 1894, although he never practised. In 1892 he had become a partner in the firm of Keyser & Co. of Throgmorton Street in the City of London, foreign bankers and was a senior partner after 1929. During the First World War, he was appointed as Local Government Board representative at Folkestone with the task of dealing with the large numbers of refugees from 'gallant little Belgium' when the voluntary War Refugee Committee could no longer cope with the weight of numbers. For this work he was awarded the OBE. He was later posted to France to report on the finances of British military hospitals. Franklin also served as a Justice of the Peace.
Politics
Radical interests
Franklin undertook social work in London and was described as an 'ardent Radical.' From 1908, he was Chairman of North Paddington Liberal Association. He served as honorary treasurer of the London Radical Candidates' Association, taking a particular interest housing and traffic. In 1912 he and his wife Laura founded the Jewish League for Woman Suffrage which campaigned for national women's suffrage and for equal rights for women within the Jewish Faith. They were assisted by the extended Jewish family including Henrietta Franklin and her sister Lily Montagu.
1908–1922
Franklin first stood for Parliament at the December 1910 general election as Liberal candidate in Paddington North. He did not win the seat but he reduced the majority of the sitting UnionistMember of Parliament, Arthur Strauss from 893 to 598 votes. He fought the seat again at the 1918 general election but this time, as a supporter of the Independent Asquithian Liberals he was not favoured with the Coalition coupon and lost his deposit. At this election the former Tory MP, Arthur Strauss, had switched parties and was standing as an Independent Labour candidate. He too lost his deposit. At the 1922 general election, Franklin fought St Pancras South East constituency but in a three-cornered contest with Conservative and Labour opponents, he came bottom of the poll.
1923–1939
Franklin achieved the only Parliamentary win of his career at the 1923 general election. Standing in Central Hackney in a three-cornered contest, he obtained a majority over the Conservatives of 1,317 votes. However he was unable to hold the seat at the 1924 general election, falling to bottom place as the Tories regained the constituency and Labour jumped into second place. Franklin tried to win the seat back at the 1929 general election but again came third in a tight three-way contest, although this time it was the Labour Party which won the seat. Franklin's final attempt to regain Hackney Central came in the 1931 general election. He again came third, although this time by a wider margin, as the Conservatives took the seat back from Labour as the representatives of the National Government. Franklin remained an active supporter of the Liberal Party, playing a prominent role in the activities of the Hackney Central Association, right up until the outbreak of war in 1939.
Much of the social work which Franklin undertook was based in the Jewish community in London and he also held positions in respect of various synagogues. He was a vice-president of the Jewish Workingmen's Club and of the South Hackney Jewish Social and Literary Society.
Publication
Franklin was a strong supporter of the reform of proportional representation and invented a system known as Percentage PR. In 1922 he published the book Percentage Proportional Representation.
Death
Franklin died suddenly at his home, The Grange, Goudhurst, Kent on 11 December 1944 at the age of 82 years.
