Tulloch was born in India to British Parents. The family moved back to Britain when Tulloch was at the age of three. Tulloch was educated at a school in Bournemouth and took courses in Cambridge University and Sussex University.
Tulloch had a research programme which led to a book on Australia's first Television soap, Country Practice and spent six months working for the production team on Doctor Who which resulted in the seminal academic book "Dr Who: the Unfolding Text" co-authored by Manuel Alvarado in 1983. He won a research grant in 2003 to work on risk, reconstruction and media in Kosovo at the time of the start of the Iraq War. He had changed his topics of keynote speeches at two separate conferences in Melbourne and the University of Kent. By the end of January 2005, Tulloch was changing his research interest to new-wars theory and sources of insecurity having been struck by concern of people dealing with risk professionally and insecurity on how to communicate with the media.
In early July 2005, Tulloch arrived back from Australia to travel to his home in Cardiff. On 7 July 2005, he made his preparation when boarding a train in the Edgware Road tube station. As he sat down, Tulloch moved closer to Mohammed Sidique Khan who had two rucksacks carrying explosives because another man had been "spilling over" Tulloch's seat. Just as Tulloch was about to stand up, the explosives from Khan's rucksacks exploded, killing seven people and critically injuring Tulloch who sustained swollen and cut eyes and shrapnel embedded in his head.He was photographed with his injuries which became an iconic image of the bombings. The photograph would later be used in a headline in The Sun which was used without the consent of Tulloch.
Since the bombings, Tulloch wrote a book entitled "One Day in July" recalling the events about surviving the attacks and has suffered from post-traumatic distress disorder.
On 15 May 2012, Tulloch filed a lawsuit against News Corporation believing that he had become a victim of Phone Hacking and that his personal details were in the hands of Glenn Mulcaire.
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