The number of new second charge mortgages grew by 1% over the same period.
Overall consumer finance lending grew 6% in August compared with the same month last year while personal loan and credit card new business together grew by 4% in the same period.
Geraldine Kilkelly, head of research and chief economist at the FLA, said: “Consumer finance new business provided by FLA members grew for the seventh consecutive month in August, reflecting the continued improvement in consumer confidence since the beginning of 2015.”