The Peep Show comedian accepted that he had probably ruined his chances of winning a role in ITV's period drama after complaining in one of his Soapbox videos that it had "tipped over the line" of plausibility.
© PA Images
© ITV
Asked if his comments had caused outrage amongst Downton fans, Mitchell told Metro: "Not that I've noticed. Maybe people slagged me off and I haven't been Googling myself assiduously enough.
"I think it's terribly written but still enjoy watching it and I don't know why. I'll watch and think, 'No-one would say that, why's that happening?' Maybe the enjoyment of the sets and costumes is enough to sustain it."
He continued: "I'd love a part in it, but I've probably shot myself in the foot there."
Mitchell also confessed to harbouring ambitions in Hollywood, but said that he is "too much of a stick-in-the-mud" to leave Britain for good.
"If someone offered me a lucrative job, there's no doubt I would take it," he said. "But I don't want to move there. I'm too much of a stick-in-the-mud to want to live anywhere so sunny."
Downton Abbey's third series continues this Sunday (October 14) at 9pm on ITV1.
