BBC Sport Interactive profiles the Great Britain squad.
Paul Anderson, Bradford Bulls
The 32-year-old prop has been a key figure in the Bulls pack which has become so dominant since 1997. Made his Great Britain debut three years ago in the Tri-Nations, as well as playing for England in the 2000 World Cup.
Brian Carney, Wigan Warriors
The former Gaelic footballer is aiming to become the first Irishman to play for Great Britain since ex-Salford and St Helens hooker Tom McKinney won the last his 11 caps in 1957. The 27-year-old winger was spotted playing student rugby league and cut his teeth with Gateshead in 1999.
Gary Connolly, Leeds Rhinos
The former St Helens and Wigan star, 32, found a new lease of life as an emergency full-back for Great Britain against the Kiwis 12 months ago and has excelled in that position for Leeds this year. Has the chance to climb into the top 10 of most-capped Great Britain players after an Indian Summer.
Paul Deacon, Bradford Bulls
The 24-year-old scrum-half made his debut in the Third Test of the 2001 Ashes Series and hopes to keep the number seven jersey ahead of Sean Long. Has arguably the best kicking game in Super League in both open play and for goal.
Gareth Ellis, Wakefield Trinity Wildcats
The 22-year-old centre was a member of the England 'A' squad that faced the Kiwis and toured the Pacific at the end of last year. His exceptional form this season earned him a call-up for Yorkshire in the Origin match and made the Tetley's Super League Dream Team.
Andy Farrell, Wigan Warriors
Great Britain captain and an ever-present since 1996, Farrell, 28, hopes to finally lead his country to an Ashes Series win. The loose forward has collected almost every domestic honour since breaking through with Wigan in 1992, though a knee injury may limit his involvement against the Australians.
Stuart Fielden, Bradford Bulls
Confirmed his status as one of the best front rowers in the game last season when he earned a place in the World XIII after a superb campaign. Strong and durable, the 24-year-old prop has recovered from knee ligament damage suffered in April and showing signs of re-capturing his best form.
Mike Forshaw, Bradford Bulls
The veteran loose forward, 33, has got better and better with age. A former Wigan, Wakefield and Leeds player, his return to rugby league with Bradford in 1997, following a spell with Saracens, saw him enter a golden period of his career. He is set to play for Warrington next year.
Lee Gilmour, St Helens
The versatile 25-year-old made a good impression as a makeshift winger for Great Britain in the final two Tests against the Kiwis. More noted as a centre or back rower, Gilmour is an elusive runner who has been a handy weapon off the bench for the Bulls over the past two seasons.
David Hodgson, Wigan Warriors
The 22-year-old centre or winger broke into the international scene in 2001 with a debut against France before facing the Kangaroos in the third Test as a substitute. Missed last year's series against the Kiwis with a dislocated shoulder but topped Wigan's try charts this year with 20.
Richard Horne, Hull FC
Super League's Young Player of the Year in 2002, the 21-year-old has continued to underline his reputation as one of the most gifted players in the game. He gained his first taste of international rugby in the 2000 World Cup for Scotland before facing Australia two years ago.
Ryan Hudson, Castleford Tigers
The 23-year-old, tough-tackling forward has been rewarded for his remarkable progress over the past three seasons with Wakefield and Castleford. Captained England Under-21s in 2001 and was an England 'A' tourist last year before skippering Yorkshire to Origin success in July.
Sean Long, St Helens
The Saints captain, 27, hopes to put two years of injury misery behind him but faces a battle for the number seven jersey with Paul Deacon. Made his Lions debut off the bench in 1997 but missed the 2001 series as he recovered from a knee reconstruction. A fractured cheekbone kept him out of the Kiwi Tests 12 months ago.
Barrie McDermott, Leeds Rhinos
The long-serving Leeds front rower, 32, loves nothing more than a duel with his Australian counterparts. Won his first cap in the 1994 Ashes Series and the Irish international has gone on to become a regular for club and country but could be playing in his final series for the Lions this year.
Adrian Morley, Sydney Roosters
An automatic selection after his hugely impressive form in Australia's National Rugby League, Morley, 26, is now the best-known British player to the Kangaroos. Capable of bone-rattling tackles and powerful bursts, the former Leeds player helped the Roosters to lift the Premiership last year.
Terry Newton, Wigan Warriors
Was likely to be first-choice hooker even before the withdrawal of Keiron Cunningham after another superb season for Wigan. Made his debut at the age of 20, he was on the bench for the one-off Test in Sydney in 2002 but has had to wait five years for his second start. Celebrates his 25th birthday the day before the first Test.
Jamie Peacock, Bradford Bulls
Another automatic selection after his impressive form in his best season yet earned him the prestigious title of Man of Steel. The 25-year-old has been a key performer in the past two Test series, scoring the first-minute try in Britain's opening win over Australia in 2001. Bounced back magnificently from a broken hand early in the season.
Kris Radlinski, Wigan Warriors
Without doubt one of the game's best full-backs, the 27-year-old's stature was shown by his inclusion in the Great Britain train-on squad while still recovering from a wrist operation. Injury kept him out of the Kiwi Tests last year, having been dogged by a chest and shoulder problem picked up against Australia in Sydney.
Stuart Reardon, Bradford Bulls
Enjoyed a meteoric rise to fame over the last 12 months, culminating in his last-minute call-up to the Great Britain party for the warm-weather training camp in Spain. Was farmed out to Featherstone and Salford last season but responded with a man-of-the-match performance in the Grand Final.
Paul Sculthorpe, St Helens
Super League's Man of Steel in 2001 and 2002, Sculthorpe is one of the leading players in the game and earned him World XIII inclusion last year. A key player for Lancashire, England and Great Britain, the only question is whether the 26-year-old wears six or 13 on his back.
Keith Senior, Leeds Rhinos
Arguably the best centre in the game following his consistent performances for Leeds. The 27-year-old possesses a powerful attacking game which has made him one of the most devastating strike players in Super League.
Kevin Sinfield, Leeds Rhinos
Has revelled in the Leeds captaincy this year, showing maturity well beyond his 23 years. Left out of the side for the third Test against the Kiwis, he will once again find his way blocked to his natural position by Farrell and Sculthorpe.
Paul Wood, Warrington Wolves
The surprise selection in David Waite's squad, the 22-year-old prop or second row forward has revelled in Warrington's Super League revival in 2003. Established a big reputation around his defensive game and making the hard metres in attack.