Julie Gearey Creator, Writer Pippa Haywood Harriet Actor Polly Walker Francesca Actor Sally Carman Kim Actor Karla Crome Aisling Actor Enzo Cilenti Mick Actor Adam Gillen Gavin Actor Emma Rigby Gemma Actor Jonas Armstrong Steve Actor Madeleine Bowyer Female police officer Actor Andrew Tiernan DS David Hunter Actor Damon Thomas Director James Graham Writer Chloe Moss Writer Anna Ferguson Producer Daniel Pemberton Original Music