I thought this was going to be a new SF drama and got quite excited.
But turns out to be a Dr Who spin off, so less excited.
Cant see a thread about, so adding this.
Only review I have seen has spoilers so wont post link but this is the iPlayer link.
2 episodes this sunday, 2 the following and just one Sunday after that.
https://www.bbc.co.uk/programmes/m002mt0s