In a significant development impacting the UK banking sector, the Competition and Markets Authority (CMA) has found four prominent high street banks—HSBC, Lloyds, TSB, and Allied Irish Bank (AIB)—guilty of breaching Britain’s competition rules.

According to the CMA’s Thursday statement, these violations pertained to several sections of the Retail Banking Order, which mandates banks to adequately inform customers about their products and services. The regulatory body, however, has not imposed any financial penalties on the banks for these infractions.

The banks have received formal notifications regarding the breaches. Lloyds, AIB, and TSB have acknowledged the findings and confirmed that they are implementing changes in their operations to prevent future violations. HSBC, having been found to have committed more extensive breaches, has been issued with an action plan by the CMA to ensure its compliance going forward.

These developments come at a time when transparency and fair practice in the banking sector are under increasing scrutiny. The CMA’s actions highlight a concerted effort to enforce compliance and protect consumer interests in the competitive landscape of retail banking.