Andrew Lincoln made sure he stayed in accent while filming series two of The Walking Dead, the series producer has revealed.
The former This Life and Teachers actor plays Rick Grimes, the lead in the American zombie series - which returns for a second series tonight (Friday) -and producer Gale Anne Hurd revealed he'd made massive efforts with his accent.
She said: "You'll see him on set and a lot of the time he stays in character all day. Sometimes you'll hear the natural accent, but a lot of time you talk to him as Andy instead of Rick, and he'll have that Southern accent."
She went on: "My husband grew up in England, and he says he cannot hear an accent at all. Generally a Brit listening can hear, but it's completely flawless."
Gale added that the new series, which has achieved record ratings in the US, will see some of the unresolved issues from series one come to a head.
She said: "We set up some tension last season. The principal one is the triangle between Lori, Rick and Shane, and that's going to be a central conflict this season, it's growing.
"Then Andrea's not too thrilled that Dale saved her from the CDC because she'd chosen to stay with Jenner and with Jacqui, so there's that tension and there are other tensions which you won't see coming."
:: The Walking Dead series two starts tonight (Friday) on FX.