Yes I don't find this to be a very compelling request to a foreign government: "someone from the UK broke our laws and pretended to be from another country to access a website owned by someone in your country that doesn't offer services in the UK. Please assist us in levying a ruinous fine on the company based out of your country that doesn't do business in the UK."

The US in particular under Trump would almost assuredly tell them to go fuck themselves.