Gareth Gill and the highly rated Casey Dunne are two of the domestic players included in the group.
“It’s great to have a number of experienced players back in the squad this year,” said Aston.
“We were very unlucky last year to lose out on points difference. We will be looking to put that right in this years competition.
Gareth Gill (Ballynahinch Rabbitohs), Elliot Cosgrove, Sean Hesketh (Batley Bulldogs), James Mendeika, Oli Roberts (Bradford Bulls), Liam Finn (Castleford Tigers), Luke Ambler, Ben Johnston (Halifax RLFC), Scott Grix (Huddersfield Giants), Gregg McNally, Bob Beswick (Leigh Centurions), Joe Keyes (London Broncos), Casey Dunne (Longhorns RL), Will Hope (Oldham RLFC), Graham O’Keeffe (Oxford RL), Brad Hargreaves, Danny Bridge, Matty Hadden (Rochdale Hornets), Callum Mulkeen (Gloucester All Golds), Dave Allen (Whitehaven RLFC), Colton Roche (York City Knights)