It's the same as everything else, isn't it?
The natural consequence of years of rock-bottom interest rates and pumping the economy full of cheap money via the pockets of the rich... and all the time the establishment have the gaul to suggest that inflation is both at an acceptable level and and under control.
Another of the many examples is posh co-op sarnies. IIRC 4-5yrs ago these were sub-£3; looked the other day and they're now £4.40 - a rise of circa 50% over this time which is what, an 8-10% increase annually.
One only has to look at the price of gold for a sobering reflection of the true value of our increasingly worthless paper tokens - which now buy about half of the shiny metal than they did five years ago.
It's why I went to the butcher - flavour.
The butcher's the best bet full stop tbh - better quality, usually cheaper and much less grotty plastic waste too.