Well, Britain also has the very special situation, that the people in the current Government were pretty much given their position by Israel, who used Israeli-linked Jewish associations in the UK for a campaign of accusations of anti-semitism against the previous leader of party (which is one of the two dominant parties in an FPTP system hence was bound to be next in Government), a campaign which was so extreme that at one point a Jewish Holocaust Survivor was accused of anti-semitism for what he said about Israel in a conference on Palestine, in order to taint by association said party leader as he was in the same panel in that conference when the words were said.

Israel bought the individuals in the current British Government, not with money but with the biggest favor in their lives.

This is why even though they’re supposedly a left-of-center party (though in practice the current faction in power in it are pure neoliberals after having got the previous - leftwing - leader out as I described above), they keep on supporting an ethno-Fascist White colonialist regime even against a public opposition so large that a large fraction of the British population not merely complained about it and stayed home, but actually took to the street to demonstrate against it even though a far away Genocide is not the kind of thing that affects them directly.

It’s an age thing.

Most higher level government officials tend to be around boomer age. And over their lifetime they’ve grown to trust traditional-media more than almost anything. And these days the most major outlets are focused eniterly on revenue, so most of them heavily self-censor.

You’d be shocked at how many people in their 60s literally do not know a fraction of what has been going on there.