Can’t they call him in due to him being the owner of the company and stoking racist riots via that companies only product in attempt to destabilize their government?
Tho I guess you really only could request it. Unless Twitter is doing actual business in the UK, which for adverts and now with the pay outs for tweeting, they probably are. But even then, one would probably only get the bootlicking CEO Yackinasackarino.