The cost of living in San Francisco, according to Numbeo, is overall lower than London: http://www.numbeo.com/cost-of-living/compare_cities.jsp?country1=United+

The cost of living in San Francisco, according to Numbeo, is overall lower than London: http://www.numbeo.com/cost-of-living/compare_cities.jsp?country1=United+Kingdom&country2=United+States&city1=London&city2=San+Francisco%2C+CA http://www.numbeo.com/cost-of-living/compare_cities.jsp?coun... Having said that, food is mostly more expensive in SF, and the results there are skewed by the cost of cigarettes being much lower. Rent appears to be higher, which I've also been told by a three or four ex-Londoners who've moved to SF.