Inflation in the United Kingdom is back to misbehaving in September. The HICP rendition of inflation posted a 0.5% increase, its second in a row, following a 0.6% increase in July. The CPIH, however, performed exactly the same, with a 0.5% increase in September and August, after a 0.6% gain in July. This is going to put the Bank of England's back up against the wall when it comes to making its next interest rate decision.
Hot, hot, hot: Inflation runs hot in the United Kingdom. The CPIH version shows a 6.6% annual rate over three months, a 4.2% pace over six months, and 3.6% over 12 months. This is a clear accelerating profile with inflation clearly over the 2% mark over each one of those horizons. A year ago, inflation was rising 4.1% year-over-year. There's very little here to provide any escape from the conclusion that interest rates need to go up and inflation is a problem that needs some strict attention.
Core inflation is rising as well: Core inflation in the U.K. under the CPIH measure rose 0.4% in September after rising 0.2% in August and 0.4% in July. The sequence of core inflation rates from 12 months inward shows a 12-month pace of 3.1%, a six-month pace of 3.2%, and a three-month pace of 4.1%. These increases are faster-paced step by step as horizons shorten. However, like the headline, all three of these metrics are above 2% and once again there is this accelerating trend in place, even for the core, and that has to be an even more difficult pill for the Bank of England to swallow.
Inflation acceleration: If we look at the tendency to accelerate, acceleration occurred in 58.3% of the categories in July; that proportion fell to 41.7% in August, and it was back up to 50% in September. So, as of September, the proportion of these categories showing acceleration is split pretty much 50/50, making it less of a clear acceleration imperative on volatile monthly data. However, over three months compared to six months, 75% of the categories are accelerating; over six months compared to 12 months, again 75% of the categories are accelerating; over 12 months compared to 12 months ago, that proportion drops to 41.7%. But the drop in the breadth of inflation is also related to the fact that the 12-month inflation rate had dropped from a year ago at 3.8% to 3.5%; it dropped more, from 4% to 3.1%, in the case of the core CPIH. In other words, inflation has fallen from a very excessive pace to a still excessive pace, and that drop is ‘endorsed’ by a drop in breadth. Breadth can reinforce direction. And now inflation and breadth both are rising – a bad sign.
Inflation ranking: We also can look at how inflation ranks compared to where it's been and on this basis that we wind up with another troubling finding. The HICP version of inflation has an 82nd percentile standing; the CPIH version also has an 82nd percentile standing and the CPIH core measure has a slightly higher 82.7 percentile standing. So, inflation is high even by historic experience; that compares current year-over-year inflation in September to inflation rates back to the year 2000. On that timeline, in fact, the median for inflation has a 77th percentile standing and the average pace for inflation has a 72nd percentile standing across categories. Now both of these are slightly lower than the actual CPIH version at a ranking of 82%. What that tells us is that inflation has been even more virulent in those categories that have a higher weight in the CPI.
Summing up On balance, this is a poor report; it will probably put the Bank of England's back up against the wall to enforce another rate hike. It's hard to see how the central bank can look at these various measures of inflation and their path and decide to pass on a rate hike at its next meeting, so brace yourself.





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