diff --git a/CHANGE_LOG.md b/CHANGE_LOG.md
index f115caa284..9b257bf0a8 100644
--- a/CHANGE_LOG.md
+++ b/CHANGE_LOG.md
@@ -1,3 +1,18 @@
+## [1.181.2](https://github.com/oaknational/Oak-Web-Application/compare/v1.181.1...v1.181.2) (2023-05-11)
+
+
+### Bug Fixes
+
+* add no theme into learning themes ([e6b3ff1](https://github.com/oaknational/Oak-Web-Application/commit/e6b3ff153b74987904359aa35347d641227a5e39))
+* type errors ([c02c502](https://github.com/oaknational/Oak-Web-Application/commit/c02c502d5c1bc51f57042144a9462da575037e52))
+
+## [1.181.1](https://github.com/oaknational/Oak-Web-Application/compare/v1.181.0...v1.181.1) (2023-05-11)
+
+
+### Bug Fixes
+
+* **security policy:** meet formatting standard ([be40d8d](https://github.com/oaknational/Oak-Web-Application/commit/be40d8d44110af4c398705c4a36d580d9e2feb50))
+
 # [1.181.0](https://github.com/oaknational/Oak-Web-Application/compare/v1.180.3...v1.181.0) (2023-05-11)
 
 
diff --git a/public/.well-known/security.txt b/public/.well-known/security.txt
index d9f149f587..6126234f64 100644
--- a/public/.well-known/security.txt
+++ b/public/.well-known/security.txt
@@ -5,6 +5,7 @@ Hash: SHA256
 
 # Please report any security vulnerabilities to us via the contact method(s) below, only after reading our security disclosure policy.
 Contact: mailto:security@thenational.academy
+Contact: https://docs.github.com/en/code-security/security-advisories/guidance-on-reporting-and-writing/privately-reporting-a-security-vulnerability
 Preferred-Languages: en
 
 # Encrypt your messages to Oak National Academy using the PGP key below
@@ -29,17 +30,17 @@ Hiring: https://jobs.thenational.academy
 # Please see https://securitytxt.org/ for details of the specification of this file
 -----BEGIN PGP SIGNATURE-----
 
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-C31pAA//ds+Ytm1eqGx0a5PlrKdpajAr3HCgjYPetNfeid/fPcHuOUymUsAmS8h3
-hBzxdpRJfpH34tzJU0ZUz6jDpY2JqpIe7m+tc35q4IySmqxKwnAV/SfemNIxb2A+
-L04aekGp+GVaoBf+ZlHxlQEGgP2Z9ne7gO1Pc+HfkzU4vYeK5/9C+6pLk9bVnxau
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-=F882
------END PGP SIGNATURE-----
\ No newline at end of file
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+NqT1Fl+qH2CGNxNFVCy3aBqHgEJ7NCyFOzBro/yDR54pe3Udr7IUE1sLreOhVVhU
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+dJMGcpZ2HlP0LFQn1BBaNGDwKY44LFHnnNrTOZ12nrtLlDp3lNc=
+=v60q
+-----END PGP SIGNATURE-----
diff --git a/src/components/Filters/LearningThemeFilters/LearningThemeFilters.tsx b/src/components/Filters/LearningThemeFilters/LearningThemeFilters.tsx
index 121c7c21dc..7605305d04 100644
--- a/src/components/Filters/LearningThemeFilters/LearningThemeFilters.tsx
+++ b/src/components/Filters/LearningThemeFilters/LearningThemeFilters.tsx
@@ -11,8 +11,8 @@ export type LearningThemeSelectedTrackingProps = {
 };
 
 export type LearningTheme = {
-  learningThemeSlug?: string;
-  learningThemeTitle?: string;
+  learningThemeSlug?: string | null;
+  learningThemeTitle?: string | null;
 };
 
 export type LearningThemeFiltersProps = {
@@ -48,12 +48,12 @@ const LearningThemeFilters = ({
     .sort(
       (
         a: {
-          label: string | undefined;
-          slug: string | undefined;
+          label: string | undefined | null;
+          slug: string | undefined | null;
         },
         b: {
-          label: string | undefined;
-          slug: string | undefined;
+          label: string | undefined | null;
+          slug: string | undefined | null;
         }
       ) => {
         if (a?.slug === "no-theme") {
diff --git a/src/node-lib/curriculum-api/fixtures/unitListing.fixture.ts b/src/node-lib/curriculum-api/fixtures/unitListing.fixture.ts
index 1553061dac..5ce590a77d 100644
--- a/src/node-lib/curriculum-api/fixtures/unitListing.fixture.ts
+++ b/src/node-lib/curriculum-api/fixtures/unitListing.fixture.ts
@@ -268,7 +268,18 @@ const unitListingFixture = (
         expiredLessonCount: 0,
       },
     ],
-    learningThemes: [],
+    learningThemes: [
+      {
+        learningThemeTitle: "The Canterbury Tales and paired texts",
+        learningThemeSlug: "the-canterbury-tales-and-paired-texts-39",
+      },
+      {
+        learningThemeTitle: "The sonnet through time",
+        learningThemeSlug: "the-sonnet-through-time-24",
+      },
+
+      { learningThemeTitle: null, learningThemeSlug: "no-theme" },
+    ],
     ...partial,
   };
 };
diff --git a/src/node-lib/curriculum-api/index.test.ts b/src/node-lib/curriculum-api/index.test.ts
index 4117f4b028..b058f52f19 100644
--- a/src/node-lib/curriculum-api/index.test.ts
+++ b/src/node-lib/curriculum-api/index.test.ts
@@ -136,6 +136,17 @@ describe("curriculum-api", () => {
       programmeSlug: "maths-secondary-ks4",
     });
   });
+  test("unitListing learningThemes contains 'no themes'", async () => {
+    const units = await curriculumApi.unitListing({
+      programmeSlug: "maths-secondary-ks4",
+    });
+    const hasThemes =
+      units.learningThemes?.filter(
+        (theme) => theme.learningThemeSlug === "no-theme"
+      ).length > 0;
+
+    expect(hasThemes).toBe(true);
+  });
   test("lessonListingPaths", async () => {
     await curriculumApi.lessonListingPaths();
     expect(lessonListingPaths).toHaveBeenCalled();
diff --git a/src/node-lib/curriculum-api/index.ts b/src/node-lib/curriculum-api/index.ts
index 0356b29dc7..ff738b21ea 100644
--- a/src/node-lib/curriculum-api/index.ts
+++ b/src/node-lib/curriculum-api/index.ts
@@ -316,8 +316,8 @@ const unitListingData = z.object({
   units: unitsData,
   learningThemes: z.array(
     z.object({
-      learningThemeTitle: z.string(),
-      learningThemeSlug: z.string(),
+      learningThemeTitle: z.string().nullable(),
+      learningThemeSlug: z.string().nullable(),
     })
   ),
 });
@@ -419,34 +419,26 @@ const curriculumApi = {
     const { units = [], programmes = [], tiers = [] } = transformMVCase(res);
 
     const programme = getFirstResultOrWarnOrFail()({ results: programmes });
-    const learningThemes = units
-      ?.filter((unit) => unit?.themeSlug !== "no-theme")
-      .map((unitWithTheme) => ({
-        learningThemeSlug: unitWithTheme?.themeSlug || "",
-        learningThemeTitle: unitWithTheme?.themeTitle || "",
-      }))
-      .sort((a, b) => {
-        if (a.learningThemeTitle < b.learningThemeTitle) {
-          return -1;
-        }
-        if (a.learningThemeTitle > b.learningThemeTitle) {
-          return 1;
-        }
-        return 0;
-      });
+    const learningThemes = units.map((unitWithTheme) => ({
+      learningThemeSlug: unitWithTheme?.themeSlug,
+      learningThemeTitle: unitWithTheme?.themeTitle || "No theme",
+    }));
 
     // !Refactor index signature to be more specific
 
-    type LearningTheme = {
-      [key: string]: string;
-    };
-
-    const filteredDuplicatedLearningThemes = learningThemes.filter(
-      (learningTheme: LearningTheme, index, learningThemeToCompare) =>
-        learningThemeToCompare.findIndex((lt: LearningTheme) =>
-          ["learningThemeSlug"].every((l) => lt[l] === learningTheme[l])
-        ) === index
-    );
+    const filteredDuplicatedLearningThemes = [
+      ...new Map(
+        learningThemes.map((theme) => [JSON.stringify(theme), theme])
+      ).values(),
+    ].sort((a, b) => {
+      if (a.learningThemeTitle < b.learningThemeTitle) {
+        return -1;
+      }
+      if (a.learningThemeTitle > b.learningThemeTitle) {
+        return 1;
+      }
+      return 0;
+    });
 
     return unitListingData.parse({
       programmeSlug: programme?.programmeSlug,