Britain's AI sector has more than tripled in value to £41bn in a single year, with nine AI unicorns pushing the UK past India to become the world's third-largest unicorn nation behind only the US and China, according to the Hurun UK Unicorn Index. London-based AI infrastructure heavyweight Nscale (£11.3bn) — which recently recruited Sheryl Sandberg and Nick Clegg to its board — leads the charge alongside voice AI firm ElevenLabs (£8.5bn), which has surpassed...