On leaving university, Teeling became a journalist and travelled widely both at home and abroad, especially in the United States where he described himself as an "amateur tramp". He lived among the homeless and hitched lifts on freight trains, reporting back to The Times about his adventures. In the early 1930s he also studied the youth movements in Nazi Germany. In winter 1933 Teeling had walked all the way from London to Newcastle upon Tyne, sleeping in hostels and examining the efforts of local councils to tackle unemployment. Another preoccupation when Teeling was travelling abroad was the treatment given to Irish immigrants and to the Catholic Church. In 1937 he wrote The Pope in Politics which suggested that Pope Pius XI was opposed to the new forms of Catholicism developing in the Americas. He followed this in 1939 with Crisis for Christianity, a book which dealt with the relations between the Catholic Church and Nazism.
Parliamentary career
When the Second World War broke out, Teeling joined the Royal Air Force. Having already fought the safe Labour seat of West Ham Silvertown in the 1929 general election, Teeling was elected to Parliament as a Conservative for Brighton in a 1944 by-election. This was a two-member seat, and Teeling was re-elected in the 1945 general election. The seat was divided into two individual constituencies thereafter, and Teeling was chosen for Brighton Pavilion. Throughout his Parliamentary career Teeling remained on the backbenches, but his expertise on foreign affairs was acknowledged. He was a strong supporter of all attempts to build a tunnel under the English Channel, and chaired an all-party committee which campaigned for it. He was also Secretary of the All-Party committee on holiday resorts. He was knighted in 1962. By 9 July 1968 he was a Member of the Conservative Monday Club and is mentioned as one of their MPs who signed a House of CommonsOrder Paper calling for the government to "exclude all questions of sovereignty over the Falkland Islands from any talks they are having with the Argentine Government".
Later life
Teeling resigned in February 1969, owing to ill health. He travelled to Africa to help his recovery. He became secretary of the Irish Peers Association in June 1970, whose cause he had often promoted.
