If you compare what identical things cost in the Eurozone to the UK, making allowance for extra taxation you will find prices are fairly similar at these currency levels.
It’s more to do with the British governments attempts to prop up the GDP and economy. Devaluing the pound against the euro simply makes exports cheaper and more attractive to Eurozone countries. Their euro buys more.
The fact the QE and pound devaluation constantly increases inflation by making things more expensive is a price they’re prepared to pay. They don’t care one iota it keeps hurting the population.
The British government are between a rock and a hard place of which they cannot easily escape apart from ramping up inflation.