OpenAI's absence from a pivotal UK site visit casts uncertainty over Stargate UK, a £20bn datacentre project touted as vital to the US-UK technology partnership.

OpenAI apparently failed to visit a key Stargate UK site before announcing the project. A previous investigation found the supercomputer location was a scaffolding yard.

Exclusive: £20bn of ‘potential’ £30bn AI investment touted by UK ministers appears to have been hypothetical