Professional pianist, who helped launch, and also had a relationship with Petula Clark.
In 1957, George Hamilton IV scored a hit with Henderson and Jack Fishman's composition "Why Don't They Understand", a song they wrote about Henderson's relationship with Petula Clark.
Henderson later penned "There's Nothing More To Say" about their split. Clark recorded both songs as album tracks.
In 1994, a previously unreleased 14-minute medley of Clark singing while accompanied by Henderson, recorded circa 1958, was found in the Pye Records vaults and released on her compilation CD, The Nixa Years: Volume 2.
Henderson's biggest hit was "Trudie", which made number 14 in the UK Singles Chart, and number 1 in the sheet music chart, where it was the biggest hit of 1958. The song also won an Ivor Novello Award.
He died of a heart attack on 4 May 1980, two days after his 60th birthday.