Sophie Hunt, 34, died from multiple organ failure and suffered three cardiac arrests following tummy tuck and Brazilian butt lift procedures in Istanbul in 2022.
Derek Hatton was a member of the Militant tendency that infiltrated Labour in the 1970s and 1980s, and served as deputy leader of Liverpool City Council when it set an illegal budget.
Pechier had claimed the poisonings were down to mistakes by others but eventually conceded a poisoner had been at work - though he insisted it wasn't him.