The UK Competition and Markets Authority (CMA) has expressed concerns regarding Topps Tiles' acquisition of 30 rival stores, warning that the takeover could lead to increased prices and reduced service quality in four regions. This acquisition has drawn criticism from shareholders, including an Austrian investor, who has renewed attacks on Topps Tiles following the CMA's decision. The situation appears to be escalating as cracks deepen within the company regarding the implications of the takeover deal.