How much did these factors contribute to the housing bubble in the UK?

Question

The housing bubble was caused by many factors such as:

- Cultural changes such as increased divorce rates, singletons living alone.

- Immigration.

- Speculation and investing.

- Cheap Credit allowing people to buy more than they could afford.

- Rich foreigners moving to UK.

How much did each factor contribute to the bubble? Did BTL investors increase prices more than immigrants?

Answer 1

I will use guess-estimate here (IMHO):

4% - Cultural changes

2% - Immigration.

42% - Speculation and investing.

42% - Cheap Credit allowing

10% - Rich foreigners moving to UK.