John Lennon and Paul McCartney penned some of the biggest hits in the history of music but they didn't always see eye-to-eye and were both critical of each other's work

The Beatles members John Lennon and Paul McCartney wrote a host of great songs together during the 1960s - but not just for their own band

The Beatles wrote a number of hits for other artists during the 1960s, including the Rolling Stones, Cilla Black, Peter and Gordon, and even influenced the name of an iconic rock band, inspired by a P