From NetFlix:

In this absorbing BBC crime drama, Clive Owen stars as Det. Chief Inspector Ross Tanner, a no-nonsense cop who disdains anything but cold, hard evidence — until a rare eye disease forces him to reassess his sleuthing methods. As he tracks down a ruthless killer, Tanner makes a deal with his ambitious partner, Catherine Tully (Claire Skinner), to advance her career in exchange for helping him hide his deteriorating vision

Acorn TV streams two seasons of this tense and well-done TV series. Season two has to be the last because Det. Chief Inspector Ross Tanner can no longer function because of his failing eyesight.

Clive Owen is his usual aggressively driven self. His acting is riveting as he expresses his helpless anger at going blind (including the fact that he may soon not be able to see his young son who lives with the divorced mother).

Claire Skinner has been in a huge number of TV series. In fact, if you are looking for some TV series to watch, just look her up in IMDB.  She appears only in season one. She abruptly quits in season two and Tanner must rely on his best friend in the police force.