slightly in september, despite rising prices for fuel and transport. the office for national statistics says inflation is measured by the consumer prices index, dipped to 3.1% last month. well, those of you with a grasp of numbers will have noticed that if inflation was 3.1% last month, then that means that prices have actually risen by that amount, not dipped. it s the rate of inflation that s gone down, not the cost of living itself. robert was one of those who spotted it, and he recorded this video for us. i was watching the bbc news at 1pm on wednesday, and was surprised to hear that the cost of living, according to the headline, has gone down in september. this wasn t actually true and, in fact, the package that followed showed that the rise in the cost of living had gone from 3.2% in august down to 3.1% in september. however, the package was introduced with the words the cost of living has dipped in september .