I'm not sure why you say 'low salaries'. Adjusted by cost of living, salaries are not that low [1]. Median (removes those salaries from 'money laundering industries') salary in London is almost £39.7k [2]. Adjust that by cost of living, and it is higher than median income in San Francisco or NYC [3].
Infrastructure is miles better than the US. Public transport, while expensive, works quite well. The US has virtually no public transport whatsoever.
Housing and renting is expensive in every major city, it is not a problem exclusive to the UK.
[0] https://www.theguardian.com/business/2022/aug/22/uk-inflatio...
[1] https://neilkakkar.com/salary-calculator-by-city.html
[2] https://www.statista.com/statistics/416139/full-time-annual-...
[3] https://www.census.gov/quickfacts/fact/table/sanfranciscocit...
Edit: format
I think one could say anything about UK these days, but lack of infrastructure investment? Seriously? UK compared to the US, it's like 50 years of difference. And I'd argue it's still ahead of most of the old EU, too.
It took them a while, and tons of money, but they made it happen. Which is more than most of the US can say.
Are you kidding? London has the highest quality apartment buildings in Europe. Well designed new builds with good services are abundant. This stuff hardly even exists in countries like France, Germany or Spain.