I guess I meant in terms of the character's identities being an important part of the story.
I suppose previously it was a lot of female companions, so I assume they've done suffragette episodes before (as the obvious choice)?
First of all I'm just going to recommend Vincent and the Doctor as a celebrity historical that feels like it'd probably please fans of this one. It's an Eleventh Doctor story centered around Vincent van Gogh, and ultimately it's about mental illness. The episode handles it well, it's very emotional and the companion plays a major part in the story. It definitely comes to mind as something similar.
But it's not quite what you're talking about in terms of the identities of the characters. I'd say there actually haven't been too many of those, no. They haven't done Suffragette on television, though a google search tells me an audio story exists. I'm quite interested in checking that one out now.