I love Siobhan Finneran but she is Northern and she sounds it a lot : it keeps coming through.
It's back to that same conversation we had about that thing set in Boston with the dreadfully wrong accents.
Dialect coaches are a thing : it's a job. Do they not employ them any more? Do the y think people don't notice?
There are plenty of west Country actors.
That aside, I thought it was good but thought Little Boy Blue and the one about Levi Bellfield were better, mainly because the leads were so effective and affecting in those.