Southern Discomfort Roller Derby (SDRD) is a men's roller derby league based in London, England. Founded in 2010, the league consists of two teams which compete against teams from other leagues. The league was founded in November 2010, initially as a south of England representative team. After playing a single bout, it remained inactive until August 2011, when it was refounded on a permanent basis. In September, the SDRD played a further game against a North of England team, then later in the year it suffered its first defeat to a mixed team of skaters from two new leagues: The Inhuman League from Sheffield, and Tyne and Fear Roller Derby from Newcastle.