It was established in 1985 and was one of the first North American breweries to revive the ancient technique of brewing cask-conditioned cask ale.

[4] In 2015, the company's facility was expanded with a 12,000-square-foot addition, including a 40-hectolitre brew house and new packaging line.

Unlike many small breweries making Beer in Canada, Wellington has not been acquired by a major brewer;[6] hence, the company now bills itself as Canada's oldest independently owned craft brewery, despite being predated by B.C.

[10] In the 2016 Ontario Brewing Awards, for example, Wellington's Imperial Russian Stout earned a gold medal, County Dark Ale received a gold medal, Iron Duke won a bronze, and Arkell Best Bitter earned a silver.

In the small-batch category (brewed in collaboration with another company), Wellington gained awards for the Welly One-Off Series, A Spice Odyssey and Farmers' Market Rhubarb Saison.