At the general election in 1835 he was elected MP for the Parliamentary Borough of Reading as a Radical, a result repeated in the general election of 1837. He chose not to run in the general election of 1841, but stood again in the general election of 1847 and was elected. In the House of Commons, Talfourd introduced a copyright bill in 1837, but the dissolution of Parliament in 1837 following the death of William IV meant that it had to be reintroduced in the new Parliament in 1838. By that time, the bill was met with strong opposition. Talfourd re-introduced it again in 1839, 1840 and 1841. It finally became law in 1842, albeit in modified form, and at a time when Talfourd was not in Parliament. Charles Dickens dedicated The Pickwick Papers to Talfourd.
Literary work
In his early years in London, Talfourd was dependent in great measure on his literary contributions. He was then on the staff of the London Magazine, and was an occasional contributor to the Edinburgh Review and Quarterly Review, the New Monthly Magazine, and other periodicals; on joining the Oxford circuit, he acted as law reporter to The Times. His legal writings on literary matters are excellent expositions, animated by a lucid and telling, if not highly polished, style. Among the best of these are his article On the Principle of Advocacy in the Practice of the Bar ; his Proposed New Law of Copyright of the Highest Importance to Authors ; Three Speeches delivered in the House of Commons in Favour of an Extension of Copyright ; and Speech for the Defendant in the Prosecution, the Queen v. Moxon, for the Publication of Shelley's Poetical Works, a celebrated defence of Edward Moxon. Talfourd's tragedy Ion was privately printed in 1835 and produced the following year at Covent Garden theatre. It was also well received in America, and was revived at Sadler's Wells Theatre in December 1861. His dramatic poem turns on the voluntary sacrifice of Ion, king of Argos, in response to the Delphic oracle, which had declared that only with the extinction of the reigning family could the prevailing pestilence incurred by the deeds of that family be removed. Two years later, at the Haymarket Theatre, The Athenian Captive was acted with moderate success. In 1839 Glencoe, or the Fate of the Macdonalds, was privately printed, and in 1840 it was produced at the Haymarket. The Castilian did not excite much interest. Talfourd also wrote:
"History of Greek Literature", in the Encyclopædia Metropolitana;