Complex sentence: During the Second World War, Kerr worked for the Red Cross, before becoming an artist and later was prompted by her future husband, Nigel Kneale, also a scriptwriter, to apply for a job as aBBC television scriptwriter.
Split into simpler sentences: During the Second World War, Kerr worked for the Red Cross, before becoming an artist. She was later prompted by her future husband--scriptwriter Nigel Kneale--to apply for a job as a BBC television scriptwriter.