A mother becomes separated from her daughter and experiences escalating panic as she desperately searches for her. The child meanwhile, protected by a 'fairy godmother' discovers a surreal wonderland.

"It's set now, but there's a 1950's flavour to this, in the clothing mainly, which gives a fantastical feel to the film." Rachel Weisz

"I'm completely hysterical throughout the film and meanwhile 'my daughter' is having the time of her life, it's a great contrast. I think that's what appealed to me about it." Rachel Weisz

"I love the idea that a British film centres around something so utterly British as the tube, which really couldn't be anywhere else in the world. I think English films don't use England or London that well. American films always include diners and motels and give a feel of Americana. The tube is also a great looking place." Rachel Weisz

"Everyone experiences the underground. You don't make friends there. You have to go into that blank state where you don't exist. I find it quite comforting, the sounds and the jolting, it seems really safe and comforting." Rachel Weisz