What degree of brutal? I feel like I have been told that before and then very little happens.
Food and energy prices could both double and it would still be fairly minor in comparison to the damage to my monthly finances caused by Liz Truss...
But maybe some of that is that I already live far more sustainably than most? I cycle instead of drive. Don't eat much meat, grow what I can focusing on the higher priced things although its a very small garden so not getting a huge amount there. Guerilla gardening and foraging is the most "profitable" though.