At the expiration of the war Incledon was discharged at Chatham and proceeded to London, with strong recommendations from Lord Mulgrave and others to Mr. Colman of the Haymarket Theatre. Colman received him coldly, and gave him no hopes of an engagement. Then he went to Southampton, where he obtained an engagement at ten shillings and sixpence a week. But soon after, owing to some dispute, he left the company and went to Salisbury with a travelling company, and fell into great poverty and misery. However, he succeeded in obtaining an engagement at Bath with Mr. Palmer, the well-known theatrical manager, and the man who introduced mail-coaches into England. Here he received thirty shillings a week. He attracted the attention of Ranzzini, the arbiter of the musical entertainments at Bath; and this able man gave him valuable instruction in scientific singing. One evening, hearing Incledon sing Handel's "Total Eclipse," the Italian was so delighted that, catching hold of his hand, he left the piano, and leading him to the front of the platform exclaimed, "Ladies an jentleman, dis is my scholar!" Thomas Harris, hearing him at Bath, proposed that he should sing and act at Covent Garden Theatre, and engaged him for three years at six, seven, and eight pounds a week. Hardly was this agreement made, when Linley, of Drury Lane, offered him twelve pounds a week, and to retain him for five years. But, although only a verbal agreement had been entered into with Harris, Incledon, to his honour, rejected the offer of Linley. It was unfortunate in more ways than one, as he would have profited by Linley's exquisite taste and instruction, as well as have earned nearly double what Harris offered. Moreover, he was very badly treated at Covent Garden, and often not given parts in which he could do himself justice. In 1809 came a rupture, and the managers dismissed him, and Incledon quitted London on a provincial tour. After two years he was re-engaged by Harris, at a salary of seventeen pounds a week, for a term of five years; but he stipulated that he should be given such rôles as suited him. This engagement was not fulfilled, and a fresh quarrel ensued that led to a final rupture at the end of three years, and he quitted Covent Garden for ever, refusing even to sing in the Oratorios performed there during Lent.