The firm of Harrison Ainslie & Co. was a British firm of ironmasters and iron ore merchants, selling high quality haematite from their mines on Lindal Moor to smelters in Glasgow, Scotland, South Wales and the Midlands. From a 21st-century perspective, they are more interesting as the last operators of charcoal-fired blast furnaces in Great Britain. Their furnaces were stone-built, water-powered, and much smaller than the coke-fired furnaces of the same era.

Backbarrow is a village in the Lake District National Park in England. It lies on the River Leven about 5 miles (8 km) northeast of Ulverston in Furness in the county of Cumbria.