Aussie set for swift exit after week of arguments and break-up with Josie

John James is a hot favourite to be the first of four evictions from the Big Brother 2010 house on Friday night - assuming he doesn't jump before he's pushed.

The troubled Aussie has threatened to walk out of the show following a turbulent week in which he has quarelled with almost every other contestant and had a huge bust-up with his beloved Josie.

The Bristol belle told her former beau "me and you are done" after their row and it seems the pressure has begun to prove too much for John James.

He is 1/2 at William Hill to be the next eviction and as short as 1/20 to go at any time during the Friday night clear-out.

Bookmakers clearly believe the public will take Josie's side in this break-up as she remains 8/13 favourite at Hills to be crowned the overall champion of the final series.

Meanwhile, punters can also now bet on who will win the upcoming Ultimate Big Brother contest, with Craig Phillips, Brian Dowling and Pete Bennett heading this market at 5/1 with Boylesports.

Nadia Almada is next best at 7/1 here, with Brian Belo a well-backed 10/1 and Nikki Grahame also attracting support at 14/1.

“It’s no surprise that Craig is favourite to win Ultimate BB," said Boylesports PR executive Nicola McGeady.

"He is a cheeky everyman who won over the public in the first ever series when he challenged Nasty Nick for cheating and cemented his popularity when he gave his winnings to charity.

"There have been many other entertaining housemates over the years, both unknowns and celebrities, and it will be fascinating to see who stands out in this final experiment.”