He gradually made his way up to the Regina Rangers of the Southern Saskatchewan Hockey League and won an Allan Cup with the team in 1940–41.

In 1947–48 after seven seasons with the Rangers and playing in the 1947 NHL All-Star Game, Warwick was traded to the Boston Bruins for Billy Taylor and future considerations.

The next season, Warwick moved on to the Okanagan Senior Hockey League and played for the Penticton Vees.

In 1955, the Penticton Vees were chosen to represent Team Canada at the World Ice Hockey Championships.

After the gold medal victory, Warwick spent one more season with the Vees before moving on with the Trail Smoke Eaters of the Western International Hockey League.