I went to see this recently and didn't like it at all. I thought the tone was confusing. Some parts of the film seemed like satire, with the over-acting so great that some characters seemed like gross caricatures. Other parts seemed to be striving for realism. None of the actors, bar perhaps Rory Kinnear, seemed real to me.
I had been looking forward to seeing it as I usually like Mike Leigh's plays and I thought it covered a subject that has received little attention. But I found this film extremely boring and, given the appalling tragedy of Peterloo, strangely unmoving.
Thinking of selling due to heat
Patricia Greene who played Jill Archer has died

