Hayley Atwell has reportedly signed up for a Marvel TV spinoff.

According to The Mirror, the British actress has taken the lead role in a US TV series called Agent Carter.

The series would be based around her character Peggy Carter, who first appeared in Captain America: The First Avenger in 2011.

Marvel has not officially confirmed the series, however an Agent Carter spinoff was said to be on the list of five potential new TV projects which was announced in October.

Atwell last year said that she would "definitely" sign up for a TV series after appearing in the One-Shot film Agent Carter.

She told Digital Spy: "The one-shot was so successful, the fanbase were like, 'We want more of Peggy!'

"I think Marvel probably take that very seriously, and it's certainly something I would be a part of doing. I'd be interested to show different sides of Peggy."

The actress is reprising the role of Peggy Carter in the upcoming Captain America: The Winter Soldier, which is set to hit cinemas on March 28.