We will be fine. We are not going to War with the Russians, the British Isles are heavily protected with the World's best defences ( including Cyber) and we don't use Russian gas or oil. We have our own , and we export / import electricity and gas to Norway etc .
The eu will have big problems but they shouldn't have been supporting russian gas sales and been so reliant on them. This has been an ongoing issue for years now & they've done nothing about it.
As for the cost of living, that's always generally gone up & the World's had 2 1/2 years of Covid Pandemic to deal with as well.
We weren't decimated , millions didn't lose their jobs, we didn't starve to death with no electric or fresh running water & hospitals didn't close. Many essential staff & petrol station staff, shop workers and 101 other job positions continued and really went the extra mile throughout. We need to congratulate ourselves, really, imo.
We are fine. The same can't be said for other Nations around the World, including russia which is a dictatorship- and for all their apple phones & Nike trainers, etc are still told how to think and have to do as they are told otherwise they will be kicked to death in the streets, or ' disappeared'.
Bullies need to be taken down a peg or two- but the right way. Not a war. That's why we must support Ukraine ( who- have their faults, God knows - which Country doesn't? ) as they are trying their best to be democratic & need to align themselves towards Europe and the Eu. Then NATO can support them. NATO isn't a warmongering army force, but a peacekeeping/assistance force - and there's a big difference.