Killiney native Allen Leech believes that there is no chance of a romance striking up between his character Tom Branson and his Downton Abbey co-star Lady Mary.

In season three of the popular period drama Branson (Leech) lost his wife Lady Sybil, while Lady Mary (Michelle Dockery) found herself widowed in the show's 2012 Christmas special.

Speaking to TV Guide, the 31-year-old star said that it wouldn't be right if pair got together, saying: "While it would be great for drama, I don't think it would be right for those two [to get together].

"As much as they respect each other, they come from very different worlds."

Downton Abbey will return to ITV1 in autumn 2013.