The 2001 Humber Refinery explosion occurred in the parish that has a population of what, as of 2011?
South Killingholme South Killingholme is a village and civil parish in North Lincolnshire, England. The population of the civil parish at the 2011 census was 1,108.
Overstone, Northamptonshire Overstone is a civil parish and small village in the Daventry district of the county of Northamptonshire, England. At the time of the 2001 census, the parish's population was 650 people, increasing to 741 at the 2011 Census.