diff --git a/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/computePassport.test.ts b/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/computePassport.test.ts
new file mode 100644
index 0000000000..8d4299a0e8
--- /dev/null
+++ b/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/computePassport.test.ts
@@ -0,0 +1,67 @@
+import { FullStore, useStore } from "../store";
+import { flowWithDuplicatePassportVars } from "./mocks/computePassport/flowWithDuplicatePassportVars";
+
+const { getState, setState } = useStore;
+
+const { computePassport } = getState();
+
+let initialState: FullStore;
+
+beforeEach(() => {
+  initialState = getState();
+});
+
+afterEach(() => setState(initialState));
+
+describe("breadcrumbs where multiple nodes set the same passport value", () => {
+  const breadcrumbs = {
+    sIipiCHueb: {
+      auto: false,
+      data: {
+        "application.information.sensitive": "test",
+      },
+    },
+    "4oH6eI9TMm": {
+      auto: false,
+      answers: ["XZlpeuJt9o"],
+    },
+  };
+
+  it("returns an array of both values", () => {
+    setState({ flow: flowWithDuplicatePassportVars, breadcrumbs });
+    const duplicateKey = "application.information.sensitive";
+
+    const output = computePassport();
+    expect(output.data).toHaveProperty(duplicateKey);
+    expect(output.data?.[duplicateKey]).toEqual(expect.arrayContaining(["test", "true"]));
+  });
+
+  it.skip("returns an array of both values, irrespective of the order of the breadcrumbs", () => {
+    const breadcrumbs = {
+      "4oH6eI9TMm": {
+        auto: false,
+        answers: ["XZlpeuJt9o"],
+      },
+      sIipiCHueb: {
+        auto: false,
+        data: {
+          "application.information.sensitive": "test",
+        },
+      },
+    };
+
+    setState({ flow: flowWithDuplicatePassportVars, breadcrumbs });
+    const duplicateKey = "application.information.sensitive";
+
+    const output = computePassport();
+    expect(output.data).toHaveProperty(duplicateKey);
+
+    // Currently returning this value
+    expect(output.data?.[duplicateKey]).toEqual("test")
+
+    // But I think we should expect this?
+    expect(output.data?.[duplicateKey]).toEqual(
+      expect.arrayContaining(["test", "true"])
+    );
+  });
+});
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diff --git a/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/mocks/computePassport/flowWithDuplicatePassportVars.ts b/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/mocks/computePassport/flowWithDuplicatePassportVars.ts
new file mode 100644
index 0000000000..4fa4ba46a4
--- /dev/null
+++ b/editor.planx.uk/src/pages/FlowEditor/lib/__tests__/mocks/computePassport/flowWithDuplicatePassportVars.ts
@@ -0,0 +1,54 @@
+import { Store } from "pages/FlowEditor/lib/store"
+
+export const flowWithDuplicatePassportVars: Store.Flow = {
+  _root: {
+    edges: [
+      "4oH6eI9TMm",
+      "CTW66QO1Aq"
+    ]
+  },
+  "4oH6eI9TMm": {
+    data: {
+      fn: "application.information.sensitive",
+      text: "Is any of the information you have provided sensitive?"
+    },
+    type: 100,
+    edges: [
+      "XZlpeuJt9o",
+      "5fh40KCyTJ"
+    ]
+  },
+  "5fh40KCyTJ": {
+    data: {
+      val: "false",
+      text: "No"
+    },
+    type: 200
+  },
+  CTW66QO1Aq: {
+    data: {
+      color: "#EFEFEF",
+      title: "The end",
+      resetButton: false
+    },
+    type: 8
+  },
+  XZlpeuJt9o: {
+    data: {
+      val: "true",
+      text: "Yes"
+    },
+    type: 200,
+    edges: [
+      "sIipiCHueb"
+    ]
+  },
+  sIipiCHueb: {
+    data: {
+      fn: "application.information.sensitive",
+      type: "long",
+      title: "What is it about the information that makes it sensitive?"
+    },
+    type: 110
+  }
+};
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