After his brother John died, Edward ran the business alone until, in 1826, because of failing health due to old age, he took on a new partner William Simms. Troughton described Simms as the best craftsman h knew, and Simms and his wife came to live with Troughton at his house in Fleet Street. Troughton was by this time over 70 years old and was suffering from some of the ailments of old age such as rheumatism and lumbago.
Pagkatapos ng kanyang mga kapatid na lalaki ni John namatay, Edward ran ang negosyo mag-isa hanggang, sa 1826, dahil sa pagkabigo sa kalusugan dahil sa gulang, siya kinuha sa isang bagong partner William Simms. Troughton inilarawan Simms ang bilang pinakamahusay na Craftsman h, alam, at Simms at kanyang asawa ang dumating sa live sa Troughton sa kanyang bahay sa mabilis Street. Troughton ay sa pamamagitan ng mga oras na ito over 70 years old at kahirapan ay mula sa ilan sa mga ailments ng gulang tulad ng rayuma at lumbago.