The timeline is a LITTLE off, but not much. This links to the women's suffrage movement, which started in the UK around 1872, but didn't succeed until 1918. It didn't get militant until 1906, which is later than this movie has it if that's the point of Eudoria's group. I'd say their actions match those suffrage groups most closely despite the years being off. In fact, in the warehouse scene Enola sees suffragette posters.
However, even if the above explanation is most likely for Eudoria's group, the Tewkesbury plot likely linked to another law... the Married Women's Property Act of 1882. It was deliberately vaguely described as the "Reform Bill" in the film. In a nutshell, this was the law that let women retain personal property after marriage, whereas previously their husband acquired anything they owned. Eudoria's speech at the end strongly implied this was NOT the goal of her group, but clearly welcomed (or at least not the main purpose, which is why she was going away again).
That's almost exactly the time period this seems to be set, other than the obvious fact that the UK didn't see it's first motorcar until 1892. So I think they've been creative one way or the other with the setting. It's VAGUELY set somewhere in the 1880s to 90s, with a vague reform Bill likely very similar to a real one around then, and an inaccurate motorcar.