The 11-carriage train came off the tracks on the West Coast Main Line near Shap, Cumbria, at about 6.15am on Monday.
Samir Zitouni, known as Sam, was working onboard the London North Eastern Railway (LNER) train from Doncaster to London on Saturday.
The hard-charging conservative became one of the most powerful and polarising vice presidents and a leading advocate for the invasion of Iraq.