Yup. Especially Russian-speaking Ukrainians who previously didn’t identify themselves much with Ukraine (the country, its culture and language) pivoted hard towards Ukrainian nationalism virtually over night (to the point of even stopping to speak Russian) the moment Russian tanks crossed the border.

While it’s practically impossible for Russia to invade the UK with troops, I would presume that missile and drone attacks (which, given the Russian modus operandi, would heavily focus on civilian targets from day one) would result in a dramatic shift in public opinion.