Towards the close of 1836 an anti-corn-law association was started in London by
Joseph Hume and other parliamentary radicals; Prentice suggested that the centre of agitation should be transferred to Manchester. On 24 September 1838 prominent Manchester merchants met him at the York Hotel, and the result was the foundation of the
Anti-Corn-Law League. For the next eight years he devoted himself to the propagation of
free trade principles. His paper came to be an organ for the advancement of the movement.
George Wilson came to play a role as moderator of the radical tactics of Prentice, who did not hold a prominent official position in the League, and who fell out with
Richard Cobden. A company was formed in 1845 to run another radical paper, the
Manchester Examiner, at the initiative of
William McKerrow. The new venture had a major impact on the
Manchester Times; and in 1847 Prentice sold out his stake in the paper. In the following year the two publications became the
Manchester Examiner and Times.
John Childs regarded Prentice as unfairly treated, as a committed activist. ==Later life==