Firrell has used digital billboards, cinema screens, newsprint, the internet, portraiture and video interviews of culturally significant figures like Howard Jacobson, April Ashley, Johnson Beharry VC, and A C Grayling, and large-scale digital projection onto the Guards Chapel, spiritual home of the Household Division of the British Army, the National Gallery in London, the Houses of Parliament, the Royal Opera House, Covent Garden, Tate Britain, and St Paul's Cathedral.
