Who wrote Peter and Gordon's biggest hit, "A World Without Love"?
Gordon Waller: Gordon Trueman Riviere Waller (4 June 1945 – 17 July 2009) was a British singer–songwriter–guitarist, best known as Gordon of the 1960s pop music duo Peter and Gordon, whose biggest hit was the No. 1 million-selling classic "A World Without Love". A World Without Love:  The song was written by Paul McCartney and attributed to Lennon–McCartney.
Paul McCartney