The widow of a PC killed by an engine fire in his BMW patrol car has spoken of her anger after it emerged police chiefs were warned of the danger years earlier.
Nick Dumphreys, 47, a father of two young children, died in January 2020 when he crashed in a fireball on the M6 near Carlisle, Cumbria.
A Mirror investigation has found that at the time there had already been at least five unexplained fires in BMW patrol cars with the same N57 engine.
