The series can be considered British for several reasons. Firstly, the historical context of the series is rooted in industrial Britain of the 19th century, where the Industrial Revolution had a major impact on the lives of workers and the poor. Additionally, the characters and dialogue are largely in British English, with regional accents and typically British expressions.

Furthermore, the series explores social and political themes that are important to British society, such as social and gender inequalities, social movements, and police corruption. The series also features carefully designed sets and costumes to recreate the atmosphere of the Victorian era, with narrow streets, rundown buildings, and working-class clothing.

Finally, the series is produced by a British company and features a predominantly British cast, further reinforcing its British identity. In summary, the series can be considered British due to its historical context, social and political themes, aesthetics, and production.