The textile industry in Manchester experienced a recession in the late 18th Century. Soup kitchens opened after the food riots of 1797, and dissatisfaction with Manchester's lack of representation at Westminster led to much social unrest.

This conflict peaked with the Peterloo Massacre of 1819. A meeting, with the aim to promote parliamentary reform, was held at St Peter’s Field that year, where gifted orator Henry Hunt was scheduled to speak, but local judges ordered an armed volunteer cavalry to arrest Hunt and attacked those in attendance, killing 11 and injuring more than 400. This event was so bloody that it was likened to the historic battle at Waterloo, hence the name Peterloo. Shortly thereafter, the radical Manchester Guardian newspaper was established.  

The 1832 Reform Act was passed in Manchester and created conditions conducive to municipal incorporation, and the city’s first MPs since 1656 were elected. In 1837, Manchester officially became a municipal borough, with the city council acquiring the remaining manorial rights. The Reform was paralleled by a flourishing intellectual and cultural life in the city. In 1803, eminent scholar John Dalton held a lecture on his atomic theory in Manchester. The Portico Library was established in 1806, as well as the Royal Manchester Institution (today the Art Gallery) in 1823, and the Manchester Botanical and Horticultural Society in 1827.