I would bet a fair amount that the Cabinet Office / GCHQ provide anonymisers for high-ranking public servants and orders not to use pm@gov.uk as an ID. ChatGPT

I would bet a fair amount that the Cabinet Office / GCHQ provide anonymisers for high-ranking public servants and orders not to use pm@gov.uk as an ID. ChatGPT takes rich text, though, which is a lot easier to de-anonymise than random search keywords.