I did mention after last week's episode;
I noticed Leslie Vickerage had a "bit part" as Mrs Dutta in this episode. She was "high profile" at one time, (female lead in "Between the Lines") so I think we might be seeing more of her in part 2.
Definitely she was my teenage fantasy in series 1 of Between the Lines
She had a fantastic figure in those days and didn't mind getting them out
She has had occasionally parts since then like the girlfriend in Inspector Lynley. Don't know if she stopped working to have a family, as has been in a number of shows in the last couple of years after a long absence.