Continuity mistake: When they are running the obstacle course, the amount of hoops in front of the girls changes from five, to two, to five again.
Continuity mistake: At the end, just after they finish singing, and are all posing, watch Posh Spice, she changes position with every camera angle.
Continuity mistake: When they are all gathered in bed, as Baby says, "A big, very old, haunted, big, old house.", Posh puts her hand behind Emma. In the next shot, she has it in front of her, then it's behind Baby again. This keeps happening over and over.