It's interesting that you have lived in both and can do a fair comparison. There was a reddit thread a while back that compared US and UK salaries.[1] The consensus seemed to be, that if you compared the cost of living, you would need a considerably higher income in the US to have the same standard of living as the UK. One person said that 130K USD salary in the Bay Area would be equivalent to 50K GBP in London.[2] Another person said that 100K USD in the Bay Area is equivalent to 50 GBP in London. [3]
It would be great to get your feedback on this.
[1]:https://old.reddit.com/r/UKPersonalFinance/comments/nhe8v1/w...
[2]:https://old.reddit.com/r/UKPersonalFinance/comments/nhe8v1/w...
[3]:https://old.reddit.com/r/UKPersonalFinance/comments/nhe8v1/w...