In Old St Mellons there is a Texaco petrol station, newsagent and convenience store, fish & chip shop, and hairdresser. The Post Office closed in 2009. There are also four public houses situated in close proximity along Newport Road: "The Bluebell Inn", "The Star Inn", "The Coach House" and "The Fox and Hounds" (widely believed to be one of the oldest pubs in Cardiff). These establishments were able to gain extra business on weekends by exploiting the Sunday Closing (Wales) Act 1881. The act prohibited the sale of alcohol in Welsh establishments on the Sabbath, but St Mellons was in the ancient county of Monmouthshire where the act did not take effect until 1921.