estants John and Edward Grimes - otherwise known as Jedward - are favourites to win.The other surviving housemates include Kerry Katona, Paddy Doherty, Amy Childs, Lucien Laviscount, Darryn Lyons and Bobby Sabel.
The new series has regularly given Channel 5 more viewers than Channel 4, the programme's former home.
The network bought the format in April, and won 5.27m viewers during its opening night in August.
Big Brother beat other programmes that were broadcast at the same time that night, including BBC One's Torchwood: Miracle Day (4.60m), ITV's Single Handed (3.15m) and Channel 4's The Killing (2.16m).
However Channel 5's audience figures have declined over the series' run, with 2.05m people tuning in for the most recent show, on Wednesday.
More than twice as many people watched BBC One's Ten O'Clock News, which started at the same time.
Channel 4 decided to end its commitment to Big Brother in 2009, after 10 years.
It broadcast its fin
al series last summer, after which Channel 5 signed a two-year deal with the makers of the programme, in the hope it would generate new audiences for the network.Speaking at the Big Brother launch last month, Channel 5's director of programmes Jeff Ford, said: "This will allow us to connect to a younger audience, and very importantly, we will continue to serve the viewers who love us."
Ford is likely to be pleased with the show's performance, as audiences have consistently been higher than those for programmes previously shown in the same timeslot.
Once the Celebrity show ends, the regular version of the series is scheduled to start on Friday night.
It not yet been announced how many housemates will be entering the Elstree compound, or how long the series will last.
bbc.co.uk
