In a high-stakes legal battle, the owner of Royal Mail must now confront an £878.5 million ($1.1 billion) class action lawsuit brought on behalf of 290,000 retail businesses. The Competition Appeal Tribunal (CAT) has ruled that the case, alleging Royal Mail abused its dominant market position to overcharge bulk mail customers, can proceed to trial.

The lawsuit, spearheaded by Bulk Mail Ltd., represents businesses, charities, and local authorities that claim they were financially harmed by Royal Mail’s anticompetitive conduct.

A Monopoly Under Fire

According to Andrew Wanambwa of Lewis Silkin LLP, who represents Bulk Mail, “Royal Mail’s abuse of its market dominance resulted in excessive charges for bulk mail services, impacting thousands of small businesses and public sector organizations.”

Royal Mail, however, is standing firm. A company spokesperson dismissed the allegations, stating, “Royal Mail believes Bulk Mail Claim Ltd.'s claim is without merit, and we will defend it robustly.”

The Battle for Class Certification

On Monday, Paul Harris KC of Monckton Chambers, arguing for Bulk Mail, pressed the tribunal to grant a collective proceedings order. He emphasized that the claim has a “reasonable, plausible, and credible prospect” of proving that Royal Mail’s restrictions on competition led to inflated prices for bulk mail services.

The class action follows a damning 2018 ruling by Ofcom, the UK’s communications regulator, which found Royal Mail guilty of using its market power to sideline Whistl UK Ltd., its only major competitor in the bulk mail sector. Ofcom determined that Royal Mail’s actions undermined competition, harming businesses that relied on large-scale mail distribution for their operations.

Who’s Affected?

Bulk Mail Ltd. is acting on behalf of businesses and organizations that purchased bulk mail services between January 2014 and June 2022. Notably, 94.7% of those affected are small and midsized enterprises, many of which depend on affordable mail services to reach their customers.

The tribunal proceedings are expected to focus on the extent to which Royal Mail is bound by Ofcom’s findings, a key point of contention in the case.

A Pattern of Legal Challenges

This lawsuit isn’t Royal Mail’s first legal headache related to anticompetitive behavior. In February, the postal giant quietly settled a £600 million claim brought by Whistl, which had accused Royal Mail of similar market manipulation. The terms of that settlement remain undisclosed.

Adding to Royal Mail’s woes, the company has already exhausted all avenues to overturn Ofcom’s original ruling. After being slapped with a record £50 million fine in 2018, Royal Mail’s appeals were rejected at the CAT, the Court of Appeal, and finally, in 2022, when the UK Supreme Court refused to hear the case.

Regulatory Crackdown on Pricing Tactics

The dispute stems from Royal Mail’s attempt to modify its pricing structure for bulk mail services—essential for the delivery of vital documents such as utility bills, tax statements, and bank notifications. Whistl, the only real competitor at the time, argued that the move would have crushed its ability to operate, forcing it to scale back its delivery services. Amid backlash and regulatory scrutiny, Royal Mail abandoned the planned price changes before they could take effect.

Kenneth MacLean KC of One Essex Court, representing International Distribution Services, acknowledged that Royal Mail accepted Ofcom’s ruling regarding its abuse of market power. However, he maintained that the regulator never definitively concluded that increased competition would have led to lower costs for customers.

Legal Teams in the Arena

The claimants are represented by a formidable legal team, including Paul Harris KC, Ben Rayment, Will Perry, and Reuben Andrews of Monckton Chambers, along with Nicholas Bacon KC of 4 New Square, all instructed by Andrew Wanambwa of Lewis Silkin LLP.

Defending Royal Mail, International Distribution Services has enlisted Kenneth MacLean KC of One Essex Court and Andrew McIntyre of Brick Court Chambers, instructed by Bryan Cave Leighton Paisner LLP.

As the case moves forward, businesses across the UK will be watching closely. If successful, the lawsuit could set a major precedent for antitrust enforcement in the country, delivering a long-awaited reckoning for Royal Mail’s pricing practices.