I saw it today on i-player and thought it was really good. I haven't watched this series properly- having fallen asleep through Fiona Bruce and couldn't face Rick Stein.
As is often the case, I did think that she would have known lots about her father - if you have a parent who was passionate about a cause, it is transmitted to you in childhood.
However, as a contrast to the 'golden land of opportunity', Sam Wanamaker's story was essential, following on from the union involvement from grandpa.
Lastly, I thought the Ukraine records were fantastic - overall thoroughly enjoyable.