diff --git a/changelog_entry.yaml b/changelog_entry.yaml
index 0f6ab7677..e3c9814af 100644
--- a/changelog_entry.yaml
+++ b/changelog_entry.yaml
@@ -2,3 +2,4 @@
   changes:
     changed:
       - Added household-level impact analysis by pension contributions to UK income tax and NI reforms blog post
+      - Updated UK LSR parameter paths to use British spelling (`labour_supply_responses`) to match policyengine-uk rename.
diff --git a/src/pages/policy/PolicyRightSidebar.jsx b/src/pages/policy/PolicyRightSidebar.jsx
index 6b255820a..1973a2128 100644
--- a/src/pages/policy/PolicyRightSidebar.jsx
+++ b/src/pages/policy/PolicyRightSidebar.jsx
@@ -111,10 +111,10 @@ function BehavioralResponseToggle(props) {
   const behavioralResponseReforms = useMemo(
     () => ({
       uk: {
-        "gov.simulation.labor_supply_responses.income_elasticity": {
+        "gov.simulation.labour_supply_responses.income_elasticity": {
           [dateString]: -0.05,
         },
-        "gov.simulation.labor_supply_responses.substitution_elasticity": {
+        "gov.simulation.labour_supply_responses.substitution_elasticity": {
           [dateString]: 0.25,
         },
       },