caption: WARNING: Embargoed for publication until 00:00:01 on 05/06/2018 - Programme Name: Poldark - Series 4 - TX: n/a - Episode: Poldark S4 - EP1 (No. 1) - Picture Shows: ***EMBARGOED TILL 5TH JUNE 2018*** Ross Poldark (AIDAN TURNER) - (C) Mammoth Screen  - Photographer: Mike Hogan