“I just see a lot of mistakes and I think of things I should have done differently.”
The fifth instalment of the BBC One period drama, co-starring Eleanor Tomlinson, will be the last.
Turner shot to fame in a shirtless scene when the Cornwall-set drama, based on the novels by Winston Graham, first aired.
Asked whether he goes shirtless again in season five, the Irish actor said: “I think I probably do. I don’t know… maybe in the bedroom there are bits, I can’t remember.”
He said it “took a lot of work” to get into shape for the first series, joking: “I couldn’t do it now.”
Poldark returns to BBC One on Sunday July 14.
Aidan Turner: I won’t be able to watch the final series of Poldark