Monday 10.40pm BBC One (11.10pm Northern Ireland)

TV WEEK: 10-16 JANUARY

IDRIS ELBA on hurtling towards disaster as a sequel to his hit drama moves from plane to train

12 JANUARY

The actor is proud to promote the Welsh language — even in lands far, far away

Pierpoint may have closed, but there are still deals to be made, backs to be stabbed and desires to be sated in the fourth series of this gripping and steamy financial drama. Harper (Myha’la) is drawn