In the early 1980s, Tiraboschi fled to London, where he engaged in criminal activities alongside other Italian expatriates, such as mobsters Vittorio Spadavecchia, another former NAR member, and Massimo Carminati, the head of the so-called Capital Mafia.Abate, Lirio (11 July 2018). "Il viaggio di Massimo Carminati a Londra: tra incontri con i latitanti e appuntamenti d'affari" [Massimo Carminati's trip to London: between meetings with fugitives and business appointments]. L'Espresso (in Italian). Retrieved 21 November 2020.