Paul reunited with Blue Peter in October 2007 for a performance at the Mod Club in Toronto, Ontario. They also performed together in May 2008 at Lee's Palace in Toronto.
Paul has three brothers who are also professional musicians. His brother, actor Mark Humphrey, plays the drums and acoustic guitar; his older brother John Humphrey is a bass player who performs with Scott Henderson; and his youngest brother Andy is a singer/songwriter/guitarist living in Portugal.
Paul Humphrey plays both keyboards and guitar.