While working at his new profession, Barnes joined the famous literary circle of which Hunt, Charles Lamb and William Hazlitt were prominent members.

Barnes enjoyed the entertainments of the West End, and he indulged his appetites frequently, much to the detriment of his physical appearance.

Upon Stoddart's dismissal at the end of 1816 Barnes was named as his successor as editor, assuming a position which he held until his death.

[5] With the Peterloo Massacre in August 1819 he inaugurated a policy of support for the Whig opposition in Parliament that contrasted with his predecessor's staunchly pro-Tory stance.

"[8] It was during this period that Barnes shifted politically, opposing the Poor Law Amendment Act 1834 and falling out with Brougham.

Barnes feuded with Lord Palmerston, who manipulated public opinion to enhance his control of foreign affairs.

Palmerston leaked secrets to the press, published selected documents, and released letters to give himself more control and more publicity, all the while stirring up British nationalism.