Though even within England, the population is highly concentrated in the South East, so the South West and North East have a lot of relatively sparsely populated areas.
Brits don't want quietness. Instead they go to Germany and drink until they can't stand upright - and then continue to drink until they pass out.
Source: was a barkeeper many years ago in Munich. A group of half a dozen Manchester fans drank more in one night than what would last two days otherwise, it's absolutely insane. Australians also tend to drink a lot, but IME they tend to get rowdy when too drunk.
Maybe the brits who want quiet aren’t going to bars in Munich to seek it out? What a fucking ridiculous means to back up an equally ridiculous statement.
Yeah, UK by area is mostly Scotland, which is stunningly beautiful and quite empty. Also infrastructure there tends to be more basic; even main roads in the north of Scotland are often single lane with passing places.
Wales and Northern Ireland are smallish by land and not very densely populated (?) but not massive outliers I'd think.
Even the SE has areas with surprisingly low population density. Outside of the urban areas much of the land is protected against development as national park/AONB/green belt.