One thing which makes this TV drama enjoyable is the wonderful classic songs from Music Hall - some real classic which have lasted. The songs steal the show, basically.
However, this also feels padded out and you can almost hear it ticking the pc boxes - it makes Marie Lloyd almost a cartoon character victim of a series of selfish man, so removes from her agency which, paradoxically, makes it all rather sexist. People make choices, as did she - always presenting women as victims of men infantlises them. The actress playing her is great, though.
Some plotholes here - characters come and go, and we never find out what happened to them - some more biographical detail at the end would have been a help (eg how old was she at the end?)
A totally unnecessary token black music hall narrator adds nothing at all, merely pads it all out. It just doesn't work. Ticking pc boxes often doesn't. Reminded me of the great video for ATOMIC by BLONDIE - watch from the start to see how a ringmaster can introduce a song or drama well. Here,. the character is just a 2-D token to tick boxes and adds nothing. But this is a BBC drama...
So not too bad - could have been done in an hour not 90 minutes though. 3 stars.