I didn't notice it at first, either! Megan really knows how to disappear into a role. She plays evil with the best of them, but she also has fantastic comedic timing. I caught Not Going Out on Youtube and got an ab workout from laughing so hard.
In the morning tide when the sparrow and the seagull fly

Canada
Was that her who played one of the evil stepsisters? Strange. I watched her in Spooks as Matthew Macfadyen's love interest,and in Love in a Cold Climate and didn't make the connection. Thanks for the info.

Makes sense she would be a stage actress. She's so talented.

From what I understand, she's heavily involved in professional and classic theatre. So as a theatrical actress first and foremost, that probably takes up most of her time. Maybe she prefers stage to film. Considering how fabulous she looks onscreen, I like to think it's her own choice to do less film rather than problems getting film work.