BOE Optionality.
a BASE-RATE ANALYSIS OF SERVICES CPI STICKINESS

The Bank of England faces a structurally different inflation challenge from the Federal Reserve or the ECB. UK services CPI has been persistently elevated, running at 5.4 to 5.8 percent year-on-year through most of 2025 and into early 2026, even as goods CPI has broadly normalised. The persistence is driven by two components that interact: wage inflation in labour-intensive service sectors and rental inflation in an undersupplied housing market.

UK private sector regular pay growth was running at approximately 6.0 percent in late 2025, down from the 8 percent peak in mid-2023 but still far above the levels consistent with 2 percent CPI. The specific sectors with the most stubborn wage inflation are health and social care, hospitality, financial and professional services, and retail. Each of these sectors has its own supply-side dynamic: health and social care faces a structural NHS staffing constraint; hospitality faces post-Brexit reduction in European worker availability; financial services face talent competition with continental Europe.

The rental inflation component reflects a genuine housing supply problem. UK private rental prices rose approximately 8 to 9 percent year-on-year in 2025, driven by landlord exit from the market (higher mortgage costs and adverse tax treatment for buy-to-let) and inadequate new construction supply. The rental component has a long lag: rental contracts reset annually, meaning the stock of rents adjusts to market rates over 12 to 18 months rather than immediately. Even as asking rent growth moderates, the ONS rental index will continue to reflect high prints from stock adjustment.

The Monetary Policy Committee operates with genuine uncertainty about whether services CPI persistence reflects a structural shift in the UK inflation process or a lagged normalisation that will resolve without requiring a deeper recession. This uncertainty is not a failure of analysis; it is an honest reflection of the limited historical precedent for the current combination of post-pandemic labour market dynamics, post-Brexit structural changes and post-energy-shock adjustment.

The conditions that would accelerate the easing cycle: services CPI declining below 4.5 percent on a sustained basis; UK unemployment rising to 5.0 percent or above (currently at approximately 4.6 percent); and wage growth deceleration to below 4.5 percent. None of these has been met consistently as of April 2026.

The conditions that would produce a pause: another services CPI surprise to the upside (above 5.5 percent); wage re-acceleration following public sector pay settlements; and evidence of second-round effects from sterling weakness that pushed import price inflation higher.

The UK gilt market exists at the intersection of BoE monetary policy and the government's fiscal trajectory. The October 2022 gilt crisis demonstrated what happens when the market loses confidence in the coherence of fiscal and monetary policy simultaneously. The current environment is less acute but the structural tension remains: the government needs to borrow heavily to fund public services, and the BoE needs to reduce its balance sheet (gilt quantitative tightening) which adds supply to the market.

Gilt quantitative tightening is proceeding at approximately GBP 100 billion per year in combined active sales and non-reinvestment of maturities. That pace of supply addition is manageable in the current environment but creates sensitivity to any deterioration in fiscal credibility.

The 10-year gilt at 4.50 to 4.65 percent prices a fairly benign scenario: the BoE easing cycle eventually brings base rates to 3.50 to 4.00 percent, term premium at 60 to 80bp and fiscal risk premium stable. The stress scenario would require 10-year gilts at 5.00 to 5.50 percent to compensate investors for a fiscal-monetary misalignment.

Sterling depreciated from approximately 1.28 per USD at the start of 2026 to 1.23 by late March 2026, driven by a combination of US dollar strength, UK growth disappointment and the widening perception that the BoE faces a harder trade-off than the Fed or ECB. The depreciation is both a consequence of the policy constraint and an additional input to it: a weaker sterling raises imported goods inflation, particularly for energy and food, which adds to the services CPI backdrop.

The BoE does not directly target the exchange rate but cannot ignore its inflation implications. Each 10 percent depreciation in sterling adds approximately 0.6 to 0.8 percentage points to CPI over a 12-month lag. At the current depreciation pace, the sterling effect is adding approximately 0.3 to 0.4 percentage points to the near-term CPI trajectory.

The desk's gilt positioning: we prefer the 5-year gilt over the 10-year given the asymmetric risk profile. The 5-year captures the easing cycle repricing (which is more predictable) without taking on the fiscal and term premium risk embedded in the long end.

For sterling: GBPUSD at 1.22 to 1.24 is near the bottom of the desk's fair value range, assuming a base-case BoE easing path to 3.75 percent by end-2026. Tactical long sterling on a pull-back to 1.20 to 1.21 is attractive risk/reward. Stop-loss below 1.18.

For UK equities: the FTSE 100's high international earnings exposure makes it a partial sterling hedge. The domestically-focused FTSE 250 is more vulnerable to UK services inflation and BoE delay. The desk prefers FTSE 100 over 250 until services CPI demonstrates a clear downtrend.