UK M4 money supply rose 0.2% month on month in April, undershooting market expectations. Forecasts had pointed to a 0.6% increase, leaving the outturn 0.4 percentage points softer than anticipated.
The weaker reading suggests slower monetary expansion over the month. M4 is a broad measure of money held by the private sector, including cash and bank deposits, and is often tracked for signals on credit conditions and liquidity trends.
Implications for Monetary Policy and Interest Rates
The lower-than-expected M4 money supply figure from April, at 0.2% versus a 0.6% forecast, signals that tighter monetary policy is effectively slowing down the UK economy. We see this as a key indicator that credit growth is cooling faster than anticipated. This trend is further confirmed by recent Bank of England data showing annual M4 growth has fallen to just 1.1%, a significant drop from over 4% this time last year.
This data point increases the probability that the Bank of England will be forced to cut interest rates sooner than the market currently expects. Combined with the latest ONS report showing UK inflation fell to 2.5% in May 2026, the case for holding rates high is weakening considerably. We believe the Monetary Policy Committee will pivot to a more dovish tone in its upcoming meetings.
In response, we are looking at interest rate derivatives that would benefit from falling rate expectations. This includes buying Sterling Overnight Index Average (SONIA) futures dated for the fourth quarter of 2026 and early 2027. We are also looking to enter positions to receive fixed rates on UK interest rate swaps.
Currency and Equity Market Outlook
For currency traders, this outlook suggests a weaker British Pound. As UK rate expectations fall relative to those in the US, where the Federal Reserve remains cautious, we anticipate downward pressure on the GBP/USD pair. We are therefore considering buying GBP/USD put options to position for a potential move towards the 1.2200 level, a support zone tested during similar policy divergences in 2024.
The situation for UK equity derivatives is more complex. While a slowing economy is a headwind for the FTSE 100, the prospect of lower interest rates could provide a supportive floor for stock valuations. Given this uncertainty and the index’s recent tight trading range, we see value in strategies that profit from a rise in volatility, such as purchasing straddles on the FTSE 100.
