Predict first and last entrances
 

Based on the rumours, I predict:

First: Sarah Harding.
Last: Shaun Williamson

Shaun / Sarah

Shaun and Sarah

Someone like Sarah won't go in first, unless there's a twist with the first housemate.

I can see them giving Paul or Barry a "task" so one of them first.

Then Sarah last probs.

I think Barry will get the twist and be first, Sarah last

First: Shaun
Last: Paul

First: Derek (given a secret task of convincing the HMs the house is haunted) (which he passes with flying colours when the actual ghost of Victoria Jensen is caught on camera throwing Jemma Lucy across the room)
Last: Trisha