He received a Commerce degree from the University of Toronto in 1948, and later operated a business forms company for twenty-five years.
Yuill's controller position also gave him a seat on the Metro council, where he was a close ally of Paul Godfrey.
[8] In 1988, he supported a ban on Now Magazine from parts of city hall as a response to the journal's adult-themed personal ads.
[12] Yuill opposed the construction of the Skydome in downtown Toronto, arguing that its location would lead to increased traffic jams.
[13] Toronto's municipal government system was significantly changed in 1988, with the introduction of direct elections to the Metro Council and the elimination of control boards.
"[14] He was defeated by Joanne Flint, a political newcomer, and was subsequently appointed as chair of the newly created North York Parking Authority.