(My real, smug, in-multiverse answer is that It, the true multidimensional being behind Pennywise, only appears once every 27 years)

He could use the massive Labour majority to blanket the country in solar panels and then go whistling into the night

As an aside, love this from the comments (the FT is the only site where you should read the comments)

I can't see why you would possibly need AI to do this...