A £1.5bn legal action against Rightmove is reaching a crucial stage today, 15 November 2026. The Competition Appeal Tribunal (CAT) will consider whether thousands of estate agents and housebuilders can automatically join the claim.
The tribunal will decide if the collective action can proceed on an opt-out basis. If approved, eligible businesses would automatically be part of the proceedings unless they choose to leave.
The claim alleges that Rightmove abused its dominant position in the online property portal market by charging estate agents excessive and unfair subscription fees. Jeremy Newman, a former Competition and Markets Authority (CMA) panel member, is leading the claim, which covers estate agents and new home developers who paid Rightmove subscription fees between 1 April 2020 and 1 April 2026.
Mr Newman argues that smaller agencies would struggle to pursue individual claims due to financial risks and legal costs. He stated that an opt-out approach is necessary, as an alternative would be a "serious obstacle for small and medium-sized businesses."
Today's hearing will not determine whether Rightmove breached competition law or owes compensation. The tribunal will begin proceedings at 10:30 am, with an additional day available if needed.