The 2018 RFL League 1 was a professional rugby league football competition played in England and Wales and is the third tier of the sport for Rugby Football League (RFL) affiliated clubs. Even before the end of the 2017 season there were news stories that two of the clubs in the league, Gloucestershire All Golds and Oxford were considering a merger and relocating to Bristol. Uncertainty around this move meant that the structure of League 1 for 2018 was undecided until October 2017 when the merger was confirmed by the RFL who also announced that the new Bristol side would not play in the league in 2018 and the league for 2018 will comprise only 14 clubs.