For Release 9:30 AM ET, December 15, 2025
Using the Composite Indexes: The Leading Economic Index (LEI) provides an early indication of significant turning points in the business cycle and where the economy is heading in the near term. The Coincident Economic Index (CEI) provides an indication of the current state of the economy. Additional details are below.
The Conference Board Leading Economic Index® (LEI) for the United Kingdom ticked down by 0.1% in October 2025 to 74.1 (2016=100), after also decreasing by 0.1% in September. As a result, the UK LEI contracted by 0.8% over the six-month period from April to October 2025, slightly more than half the rate of decline compared to -1.5% over the previous six-month period between October 2024 and April 2025.
The Conference Board Coincident Economic Index® (CEI) for the United Kingdom ticked up by 0.1% in October 2025 to 108.1 (2016=100), reversing the 0.1% decline from September. Overall, the CEI for the UK grew by 0.2% over the six-month period from April to October 2025, significantly lower than the 1.0% increase observed over the previous six-month period between October 2024 and April 2025.
Note for Change in Annual BCI Benchmark Revision Timing
Annual BCI Benchmark Revisions
Release of the annual benchmark revisions for Business Cycle Indicator (BCI) composite economic indexes will be moved from January 2026 to June 2026. Releases in subsequent years will also be in June. This modification ensures that the sample period fully incorporates the most recent completed calendar year of the underlying components (source data) of composite indexes (leading and coincident). This data is used for calculating standardization factors and subsequently trend adjustments.
Due to the change in revision release timing from January to June, the cutoff for incorporating source data revisions into the benchmark process will shift accordingly:
- For the next benchmark revision in June 2026, the cutoff used for calculating standardization factors and trend adjustment will be December 2025, rather than December 2024.
- This change in timing allows the volatility calculations and factor updates to reflect a more complete dataset prior to the annual recalculation of the historical composite indexes.
The next release is scheduled for Friday, January 16, 2026, at 9:30 A.M. ET.


NOTE: The chart illustrates the so-called 3Ds—duration, depth, and diffusion—for interpreting a downward movement in the LEI. Duration refers to how long the decline has lasted. Depth denotes the size of decline. Duration and depth are measured by the rate of change of the index over the most recent six months at an annualized rate. Diffusion is a measure of how widespread the decline is among the LEI’s component indicators—on a scale of 0 to 100, a diffusion index reading below 50 indicates most components are weakening.
The 3Ds rule signals an impending recession when: 1) the six-month diffusion index lies at or below 50, shown by the black warning signal lines in the chart; and 2) the LEI’s six-month growth rate (annualized) falls below the threshold of −3.6%. The red recession signal lines indicate months when both criteria are met simultaneously—and thus that a recession is likely imminent or underway.
About The Conference Board Leading Economic Index® (LEI) and Coincident Economic Index® (CEI) for the U.K.
The composite economic indexes are key elements in an analytic system designed to signal peaks and troughs in the business cycle. Comprised of multiple independent indicators, the indexes are constructed to summarize and reveal common turning points in the economy in a clearer and more convincing manner than any individual component.
The CEI reflects current economic conditions and is highly correlated with real GDP. The LEI is a predictive tool that anticipates—or “leads”—turning points in the business cycle by around seven months.
The eight components of Leading Economic Index® for the U.K. are:
The four components of the Coincident Economic Index® for the U.K. are:
To access data, please visit: https://data-central.conference-board.org
About The Conference Board
The Conference Board is the member-driven think tank that delivers Trusted Insights for What’s Ahead®. Founded in 1916, we are a non-partisan, not-for-profit entity holding 501 (c) (3) tax-exempt status in the United States. TCB.org
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All release times displayed are Eastern Time
Note: Due to the US federal government shutdown, all further releases for The Conference Board Employment Trends Index™ (ETI), The Conference Board-Lightcast Help Wanted OnLine® Index (HWOL Index), The Conference Board Leading Economic Index® of the US (US LEI) and The Conference Board Global Leading Economic Index® (Global LEI) data may be delayed.
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