This guy analysed rental data in SF and found that rents grew by 2.5% above inflation for the last 30 years.
https://medium.com/@andersem/a-guy-just-transcribed-30-years-of-for-rent-ads-heres-what-it-taught-us-about-sf-housing-prices-bd61fd0e4ef9#.xx0qgxxfc
Do you think a similar pattern exists in British cities?
He also identified 3 factors that could be used to predict the market:
The number of jobs located in San Francisco County.
The number of places in San Francisco County for people to live.
The total amount of money that is paid to everyone who works jobs in San Francisco County.
The number of jobs located in San Francisco County. The number of places in San Francisco County for people to live. The total amount of money that is paid to everyone who works jobs in San Francisco County.