South London Storm's Powergen Challenge Cup run came to an end in the second round on Saturday when they were beaten 50-24 at Castleford Lock Lane. Sharlston Rovers, who beat Dewsbury last season, are also into round three after beating Oulton Rovers 31-21.
Four French clubs and two Russian sides will join Castleford and Sharlston in the hat for Wednesday's draw.
UTC, St Gaudens, Toulouse and Pia fly the French flag while Strela Kazan and Locomotiv Moscow will represent Russia.
Powergen Challenge Cup second-round results:
Waterhead 15-12 Army
Wigan St Jude's 22-16 Millom
Illingworth 28-26 Eccles & Salford Juniors
Milford Marlins 14-34 Wath Brow Hornets
Halton SIms Cross 16-24 Thornhill Trojans
West Bowling 26-27 Hull Dockers
Thatto Heath Crusaders 26-38 East Hull
Oldham St Annes 18-12 Leigh Miners Rangers
Rochdale Mayfield 14-19 Stanningley
Sharlston Rovers 31-21 Oulton Raiders
Siddal 29-26 Wigan St Patrick's
Barrow Island 10-14 Elland
Haydock 48-30 Normanton Knights
Castleford Lock Lane 50-24 South London Storm