https://www.theguardian.com/business/2023/mar/03/uk-chip-designer-arm-chooses-us-only-listing-in-blow-to-rishi-sunak

PM had held talks with firm’s owner SoftBank in effort to make London first choice for tech flotations

The Cambridge-based chip designer Arm is to pursue a US-only listing this year, dealing a major blow to Rishi Sunak’s ambitions to make London the first choice for tech company flotations.