Morris returned to the UK in 1917 and lived in Wales and England while working in the steel, coal mining and railway industries.
He was a candidate for the House of Commons of Canada on several occasions, but never elected: Morris also campaigned unsuccessfully for provincial office.
In the Manitoba provincial election of 1932, he ran in the city of Winnipeg as a "United Front Workers" candidate (the Communist Party being under legal proscription at the time).
At the time, the provincial constituency of Winnipeg elected ten members by the single transferable ballot system.
Morris was a popular stump speaker for the party and toured the country speaking to left wing and labour audiences.