London-based AI startup PhysicsX raises $300 million in a Series C round led by Singapore sovereign wealth fund Temasek, according to reports. The financing values the company at $2.4 billion, more than doubling its valuation compared with its prior round less than a year earlier, which reportedly priced PhysicsX at just under $1 billion. The round is described as oversubscribed. Coverage characterizes PhysicsX as an AI-focused business that uses machine learning to reduce the time needed for physics simulations, shifting timelines from days to seconds. Financial Times also frames the funding as placing PhysicsX among the most highly valued AI companies in the UK. Seeking Alpha and The Next Web report the same headline valuation and deal size, with Temasek named as the lead investor. The sources do not present additional deal terms such as ownership stakes or whether other investors participated beyond noting Temasek’s involvement and the round’s oversubscription.