In 2015, Harley pledged to help raise funds for a new memorial to his late friend Mick Ronson. In April 2016, Harley played for free at the Hull City Hall to help kick-start the appeal. In November 2016, Harley was one of a number of musicians who teamed up with British Members of Parliament and the Royal Opera House Thurrock Community Chorus to record a charity version of the Rolling Stones song "You Can't Always Get What You Want" in memory of Labour MP Jo Cox. The song was released by Chrysalis Records in December 2016, with all proceedings going to the Jo Cox Foundation. It reached No. 136 on the UK Singles Chart, No. 24 on the UK Singles Sales Chart and No. 9 on the Top 30 Indie Singles Chart.