Actor shots: 

Joanna: person at camping

Sian: person at camping/ghost, because she has long hair and can put it in front of her face so that what the character is stays a mystery.

Matt: person at camping

Tanguy, person at camping, who tells the story

Olivia, girl who doesn't believe in the story

Jamie: Person at camping

Georgie: person at camping

Rowland: person at camping

Johnny: Person at camping

Nick: person at camping

Ben: person at camping