Hart is a former Mi6 "Front Agent", used to infiltrate and report on groups or organisations, such as the Bases project. She has been a major broadsheet journalist, reporting for the News of The World and others, in Northern Ireland, and on the Moore's Murders (Mk-Ultra).
Here is a very rare appearance via Skype she describes some of her work.
Hart ran very many radio shows for Revolution Radio, via BASES 50, which is still to re-uploaded. Some of her shows featured the late Max Spiers days before his murder, in 2016.
Bases2019 was a short series, mainly to introduce SSP operative Julie Phelps to a UK public.