Portal fees average 7.2% of an agent's monthly commission, rising to 13.5% in Glasgow. In April 2026, agents and developers filed a £1.5bn claim against Rightmove at the Competition Appeal Tribunal over exactly this, backed by more than 250 agencies — Rightmove disputes the claim. None of that changes on its own. It changes when the traffic Rightmove points to as justification stops growing quite so easily.
Past campaigns asked agents to leave Rightmove entirely, all at once — a full boycott, a formal membership drive. They mostly stalled, because no single agency can afford to go first while buyer search is still concentrated on the portal. Rightmove Hygiene doesn't ask that. It asks you to stop being the free supply chain for the traffic that justifies your own fee increase — one habit, five minutes, no listing given up.