While the current UK government is second only to the US in providing that uncanny feeling of both despair and amusement, I would hesitate to call them "autocratic". Save yourself some rhetorical breathing room for when you need it.

Among other things, "autocratic" implies something of a firm grip on power. A quality the current UK government does not seem to have ("get a grip" is probably something Theresa May hears more often than she'd care to admit).