[Billy]

As the only housemate to continually shorten in the last month, going from 20/1 to 4/1 in the space of a month, and with both Freddie and Siavash (although the latter isn't as much anymore) drifting out in the betting, I think it's a major possibility that Sophie could be the new favourite.
Freddie is currently with most places at 2/1, with some he's even a tad over that and drifting, so with Sophie at 4/1 and shortening I think there's a good shot Freddie could be ending his reign as bookies favourite...