 On 30 January 2001 , Johnson , aged 85 years , died from cancer . A memorial service took place on 25 April 2001 at St Clement Danes and the hymns Jerusalem and I Vow to Thee , My Country were played . His children scattered his ashes on the Chatsworth estate in Derbyshire . The only memorial was a bench dedicated to him at his favourite fishing spot on the estate ; the inscription reads " In Memory of a Fisherman " . 
