Pre-production and casting is underway for a second Nanny McPhee film. The initial working title of "Nanny McPhee UXB" (which stands for unexploded bombs) of Emma Thompson's script has given way to "Nanny McPhee and the Big Bang".
The film is not a sequel but is set 100 years after its predecessor.
“It’s about two families: A family of country children, and a family of town children, [both] during the war. So it’s about evacuees, and the father is away at war. So this time, the lone parent is the mother. That’s what it’s about: The big war, and a war between these two sets of extremely different children.” Thompson said.
Filming was originally scheduled for August 2008 but was then postponed till 2009.