The jury at Inner West London Coroner's Court concluded that Uddin died due to an action he took, but said it was "not possible to determine whether he intended the outcome to be his death."
Uddin was jailed in February 2020 for breaching the TPIM order. Before that, he had served a sentence for racially or religiously aggravated harassment.
TPIMs allow the authorities to control people whom the government believes are involved in terrorism, but who are not facing criminal charges. The home secretary acts on advice from MI5 when imposing them.
Subjects of TPIMs can face measures including electronic tagging, curfews, relocation to a different part of the country, bans on internet use, controls on finances, and limits on who they can meet and where they can go. Breaching the measures can result in a terrorism conviction and prison sentence. TPIMs can currently last up to five years, up from a maximum of two.
The findings raise questions about the mental health impact of such orders and the duty of care owed to prisoners held under them.