[2] In May 1938 he joined a delegation pressing for a Whitley Council for nurses, to fix minimum salaries and maximum hours.

[3] During the Second World War, Moyle represented the Trades Union Congress on the Nurses Salaries Committee chaired by Lord Rushcliffe which published two reports in 1943.

[7] In May 1946, Moyle was appointed as Parliamentary private secretary to the Prime Minister, Clement Attlee, following Geoffrey de Freitas who had been given a ministerial post.

[8] The appointment gave Moyle a central role in managing relations between Attlee and government backbenchers, and almost silenced him in the chamber of the House of Commons.

Attlee gave his PPS access to almost all important decisions, and respected Moyle's advice on the sometimes fractious Parliamentary Labour Party.

He was particularly concerned about air pollution and complained that smokeless fuel was too expensive and slow to order; he advocated the nationalisation of the companies who made it to expand production.

[23] Following the 1959 general election, Moyle found himself unable to play an active part in Parliament due to illness.

His lack of participation was highlighted by the BBC television programme "That Was the Week That Was" in January 1963, which listed all 13 MPs who had not made a speech in the entire Parliament.

In September 1965, Moyle wrote to The Times to urge that one cricket test match in each tour should be allocated to South Wales.

[24] In the Queen's Birthday honours list of 1966,[25] he was given a life peerage, being created Baron Moyle, of Llanidloes in the County of Montgomery on 23 June 1966.