FXstreet.com (Barcelona)- United Kingdom's Retail Prices Index fell increased somewhat slower in December than in November due to the lower increases of average mortgage interest payments compared to the same period last year, according to the latest report by National Statistics.

RPI increased 4.0% year on year in December, down from 4.3% in November, while excluding mortgage interest payments, PRPI rose 3.1%, down from 3.2% in November. On the month, RPI increased 0.6%, up from 0.3% in November.