Audio problem: In the scene where Maggie and Steve are running outside and come across Richard standing on a mine, he says something along the lines of 'This whole place is covered in mines'. As Maggie starts her next line, a voice in the background shouts 'no its not! haha!'.
When they're travelling in the coach, wideshots of them driving show them driving through deserted countryside. But in shots from inside the coach you can see the roofs of houses and telephone poles passing by.