The Rugby Football League has announced that from next season the second and third tiers will be combined into one league.
At present there are 13 teams in the Championship and 10 in League One, while last month Super League clubs voted in favour of expanding the number of teams in the top flight from 12 to 14 for 2026.
Due to the amendment, the planned ‘super eights’ post-season fixtures to decide on promotion to or relegation from the Championship at the end of this season will now not take place.
The RFL said that a number of possible fixture formats are being discussed for the new-look second division but there will be no announcement until after 16 October, when the Super League line-up for 2026 will be revealed.
“Following the decision of the Super League clubs that the elite competition should expand to 14 clubs in 2026, subject to conditions, this is a logical and equally exciting next step,” said interim RFL chair Nigel Wood.
“The Championship and League One clubs have been extensively consulted and were virtually unanimous that the two divisional structure for the part-time game wasn’t working as well as it ought, particularly League One – and it is a great credit to the Championship clubs that they recognised that position.
“There are so many historic and ambitious clubs outside the Super League, and we believe this will not only enhance their attendances and finances, but also make them more attractive for investment.”
Clubs who wish to be considered for the additional two spots in the top tier have until 12 September to submit a bid.
On Wednesday, London Broncos, who are 10th in the Championship, said they were one of 12 teams to have lodged an interest.