 Woodall is the youngest of six children , including three half @-@ siblings from her father 's first marriage . Her father was a banker , while her maternal grandfather was Sir John Duncanson , controller of the British steel industry in the last two years of the war , who went on to become managing director of the British Iron and Steel Federation ( BISF ) in August 1945 and then managing director of Lithgows in 1949 . 
