The July and November internationals are being restructured into a biennial tournament by Six Nations Rugby and South Africa, New Zealand, Australia and Argentina Rugby (Sanzaar) from 2026. The competition will take place in alternating years, between British and Irish Lions tours and Rugby World Cups, and the two organisations stress that it will not add to concerns over player burnout.
The tournament is set to feature England, Scotland, Wales, Ireland, France and Italy from the Six Nations and the Rugby Championship teams which are collectively known as Sanzaar.