Staff Sergeant Denis Croker died in August 1994 aged 47. He enlisted as a Junior Soldier in 1962, entering the Corps in 1968. He served in Germany, UK and NI, and spent the last three years of his service in JSIW before retiring to work for the police in 1984.
I do not know which Junior Soldier/Leader unit Denis started with. But as you show other Junior Leader units on the site, perhaps someone out there might remember him.