Corona was a brand of carbonated soft drink produced by Thomas & Evans Ltd in South Wales, and distributed across the United Kingdom. The firm was created by grocers William Thomas and William Evans when they saw a market for soft drinks caused by the growing influence of the temperance movement. The company's first factory was based in Porth, Rhondda, eventually expanding to 87 depots and factories throughout Britain. Corona was sold to the Beecham Group in 1958 and subsequently to Britvic, but stopped trading as a brand in the late 1990s.

Porth is a town and a community in the county borough of Rhondda Cynon Taf, within the historic county boundaries of Glamorgan, Wales. Lying in the Rhondda Valley, it is regarded as the gateway connecting the Rhondda Fawr and Rhondda Fach valleys due to both valleys meeting at Porth. The Welsh word "porth" means "gate". Porth is a predominantly English-speaking community.