[gnfargbl]

A very late response, but just to say thanks for this. The full dataset you found is actually available at https://www.nationwidehousepriceindex.co.uk/download/ftb-mtg....

It is worth looking at the mid-2000s numbers (post-MIRAS, but pre-crash) and comparing them to today's numbers. They're really not so different.

No argument on the relative leverage: 10% would be impossible and 15% would probably precipitate a revolution.