[1] Peters started his political career as an Agent with the Liberal Party, along with Arthur Henderson.
Like Henderson he left the Liberals to join the emerging Labour Party.
[2][3] He was a strong supporter of the suffragists and the National Union of Women's Suffrage Societies.
[4] In 1918, Peters chaired a Labour Party commission examining organisation and elections.
[5] In 1921 he was appointed Deputy Housing Commissioner at the Ministry of Health, serving for two years.