"In the three years to 2007, 71% of first-time buyers' mortgages were made on a capital and interest repayment basis compared to only 17% in the three years to 1989,"
Obviously this only refers to FTB, but I can't imagine that interest-only mortgages are more common amongst homemovers.
Presumably a lot of the 83% who took interest only mortgages in the three years to 1989 were on endowment mortgages as these were common then.
I would be more interested to see the proportion of first time buyers who took interest only mortgages with no repayment vehicle in place for both time periods.