In June 1830, Everest returned to India to continue his work on the GTS, and was simultaneously appointed Surveyor General of India. The arc from Cape Commorin to the northern border of British India was finally completed in 1841, under the supervision of Andrew Scott Waugh. To his dismay, much of his time was spent on administrative concerns, as well as combating criticism from home. The East India Company had provisionally Thomas Jervis as Everest's successor, and Jervis subsequently delivered a series of lectures to the Royal Society on the perceived deficiencies of Everest's methods. In response, Everest penned a series of open letters to Prince Augustus Frederick, Duke of Sussex, the society's president, in which he lambasted the society for meddling in matters of which they know little. Jervis withdrew from consideration, and Everest successfully secured the appointment of his protégé Waugh as his successor. He resigned in November 1842 and his commission was formally revoked in December 1843, at which point he returned to England.