diff --git a/src/app/components/cms/ChartRowCardContent/ChartRowCardContent.tsx b/src/app/components/cms/ChartRowCardContent/ChartRowCardContent.tsx
index b3fb2ac77..22a818cbd 100644
--- a/src/app/components/cms/ChartRowCardContent/ChartRowCardContent.tsx
+++ b/src/app/components/cms/ChartRowCardContent/ChartRowCardContent.tsx
@@ -53,7 +53,14 @@ export function ChartRowCardContent({ value, isPublic, pageClassification }: Cha
               className="ukhsa-chart-card flex flex-col gap-6"
             >
               <article>
-                <ChartRowCardHeader id={column.id} title={column.value.title} description={column.value.body}>
+                <ChartRowCardHeader
+                  id={column.id}
+                  title={column.value.title}
+                  description={column.value.body}
+                  isPublic={isPublic}
+                  pageClassification={pageClassification}
+                  authEnabled={authEnabled}
+                >
                   <Timestamp data={column.value} size={size} />
                 </ChartRowCardHeader>
                 <Tabs defaultValue={`${kebabCase(column.value.title)}-chart`} className="govuk-!-margin-bottom-0">
diff --git a/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.spec.tsx b/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.spec.tsx
index 497996a16..9c7090c57 100644
--- a/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.spec.tsx
+++ b/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.spec.tsx
@@ -14,14 +14,30 @@ const getAreaSelectorMock = jest.mocked(getAreaSelector)
 describe('ChartRowCardHeader', () => {
   test('renders correctly with props', async () => {
     getAreaSelectorMock.mockResolvedValue([])
-    render(await ChartRowCardHeader({ id: '1', title: 'Sample Title', description: 'Sample Description' }))
+    render(
+      await ChartRowCardHeader({
+        id: '1',
+        title: 'Sample Title',
+        description: 'Sample Description',
+        pageClassification: 'official',
+        authEnabled: false,
+      })
+    )
     expect(screen.getByRole('heading', { level: 3, name: 'Sample Title' })).toBeInTheDocument()
     expect(screen.getByText('Sample Description')).toBeInTheDocument()
   })
 
   test('displays a location when set', async () => {
     getAreaSelectorMock.mockResolvedValue([null, 'Test Area'])
-    render(await ChartRowCardHeader({ id: '1', title: 'Title', description: 'Description' }))
+    render(
+      await ChartRowCardHeader({
+        id: '1',
+        title: 'Title',
+        description: 'Description',
+        pageClassification: 'official',
+        authEnabled: false,
+      })
+    )
     expect(screen.getByRole('heading', { level: 3, name: 'Title (Test Area)' })).toBeInTheDocument()
   })
 
@@ -31,18 +47,22 @@ describe('ChartRowCardHeader', () => {
         id: '1',
         title: 'Title',
         description: 'Description',
+        pageClassification: 'official',
+        authEnabled: false,
         children: <div>Child Element</div>,
       })
     )
     expect(screen.getByText('Child Element')).toBeInTheDocument()
   })
 
-  test('has correct structure and HTML elements', async () => {
+  test('applies correct classes to description and heading', async () => {
     render(
       await ChartRowCardHeader({
         id: '1',
         title: 'Title',
         description: 'Description',
+        pageClassification: 'official',
+        authEnabled: false,
       })
     )
     expect(screen.getByText('Description')).toHaveClass(
diff --git a/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.tsx b/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.tsx
index f7fc782d7..28999d05e 100644
--- a/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.tsx
+++ b/src/app/components/ui/ukhsa/ChartRowCardHeader/ChartRowCardHeader.tsx
@@ -1,21 +1,35 @@
 import { ReactNode } from 'react'
 
+import { DataClassification } from '@/api/models/DataClassification'
 import { getAreaSelector } from '@/app/hooks/getAreaSelector'
+import { getDataClassification } from '@/app/utils/table.utils'
 
 interface ChartRowCardHeaderProps {
   children?: ReactNode
   title: string
   description?: string
   id: string
+  isPublic?: boolean
+  pageClassification?: DataClassification
+  authEnabled?: boolean
 }
 
-export async function ChartRowCardHeader({ children, id, title, description }: Readonly<ChartRowCardHeaderProps>) {
+export async function ChartRowCardHeader({
+  children,
+  id,
+  title,
+  description,
+  isPublic,
+  pageClassification = 'official_sensitive',
+  authEnabled,
+}: Readonly<ChartRowCardHeaderProps>) {
   const [, areaName] = await getAreaSelector()
 
   return (
     <header>
       <h3 id={`chart-row-card-heading-${id}`} className="govuk-heading-m mb-2 font-bold">
-        {title} {areaName && `(${areaName})`}
+        {title} {areaName && `(${areaName})`}{' '}
+        {getDataClassification(isPublic, pageClassification as DataClassification, authEnabled)}
       </h3>
       {description ? (
         <p className="govuk-body-s govuk-!-margin-bottom-2 pt-0 italic text-dark-grey">{description}</p>
diff --git a/src/app/components/ui/ukhsa/FilterLinkedCards/SubplotFilterCard.tsx b/src/app/components/ui/ukhsa/FilterLinkedCards/SubplotFilterCard.tsx
index ca219405d..84b11e591 100644
--- a/src/app/components/ui/ukhsa/FilterLinkedCards/SubplotFilterCard.tsx
+++ b/src/app/components/ui/ukhsa/FilterLinkedCards/SubplotFilterCard.tsx
@@ -18,6 +18,7 @@ import SubplotClientChart from '@/app/components/ui/ukhsa/FilterLinkedCards/comp
 import { SubplotClientTable } from '@/app/components/ui/ukhsa/Table/SubplotClientTable'
 import { formatDate } from '@/app/utils/date.utils'
 import { FlattenedGeography, getParentGeography } from '@/app/utils/geography.utils'
+import { getDataClassification } from '@/app/utils/table.utils'
 
 import { Card } from '../Card/Card'
 import DropdownTab from '../Tabs/DropdownTab'
@@ -59,6 +60,7 @@ const SubplotFilterCard = ({
   const title = `${cardData.title_prefix} between ${timePeriods[currentTimePeriodIndex].value.label} (${geographyParent?.name}, ${geography.name})`
   const id = title
   const about = cardData.about ? cardData.about : ''
+  const dataClassification = getDataClassification(isPublic, level ?? 'official_sensitive', authEnabled)
 
   return (
     <div key={id} className="mb-4">
@@ -66,7 +68,7 @@ const SubplotFilterCard = ({
         <article>
           <header>
             <h3 id={`chart-row-card-heading-${id}`} className="govuk-heading-m mb-2 font-bold">
-              {title}
+              {title} {dataClassification}
             </h3>
             <p className="govuk-body-s govuk-!-margin-bottom-2 pt-0 italic text-dark-grey">{description}</p>
           </header>
diff --git a/src/app/components/ui/ukhsa/FilterLinkedCards/TimeseriesFilterCard.tsx b/src/app/components/ui/ukhsa/FilterLinkedCards/TimeseriesFilterCard.tsx
index 5db87a060..c208384a4 100644
--- a/src/app/components/ui/ukhsa/FilterLinkedCards/TimeseriesFilterCard.tsx
+++ b/src/app/components/ui/ukhsa/FilterLinkedCards/TimeseriesFilterCard.tsx
@@ -13,6 +13,7 @@ import { ClientTable } from '@/app/components/ui/ukhsa/Table/ClientTable'
 import DropdownTab from '@/app/components/ui/ukhsa/Tabs/DropdownTab'
 import { formatDate } from '@/app/utils/date.utils'
 import { FlattenedGeography, getParentGeography } from '@/app/utils/geography.utils'
+import { getDataClassification } from '@/app/utils/table.utils'
 import { getMinMaxYears, MinMaxYear } from '@/app/utils/time-period.utils'
 
 import { Card } from '../Card/Card'
@@ -47,6 +48,7 @@ const TimeseriesFilterCard = ({
   const title = `${cardData.title_prefix} between ${minMaxDateRange.minDate} - ${minMaxDateRange.maxDate} (${geographyParent!.name}, ${geography.name})`
   const id = title
   const about = cardData.about ? cardData.about : ''
+  const dataClassification = getDataClassification(isPublic, level ?? 'official_sensitive', authEnabled)
 
   return (
     <div key={id} className="mb-4">
@@ -54,7 +56,7 @@ const TimeseriesFilterCard = ({
         <article>
           <header>
             <h3 id={`chart-row-card-heading-${id}`} className="govuk-heading-m mb-2 font-bold">
-              {title}
+              {title} {dataClassification}
             </h3>
             <p className="govuk-body-s govuk-!-margin-bottom-2 pt-0 italic text-dark-grey">{description}</p>
           </header>
diff --git a/src/app/utils/table.utils.spec.tsx b/src/app/utils/table.utils.spec.tsx
index cb94854a5..1b00b87ca 100644
--- a/src/app/utils/table.utils.spec.tsx
+++ b/src/app/utils/table.utils.spec.tsx
@@ -1,6 +1,6 @@
 import { render, screen } from '@/config/test-utils'
 
-import { getColumnHeader } from './table.utils'
+import { getColumnHeader, getDataClassification } from './table.utils'
 
 const renderHeader = (
   chartLabel: string,
@@ -90,3 +90,41 @@ describe('getColumnHeader', () => {
     })
   })
 })
+
+describe('getDataClassification', () => {
+  test('returns empty string when authEnabled is false', () => {
+    expect(getDataClassification(false, 'official_sensitive', false)).toBe('')
+  })
+
+  test('returns classification when authEnabled is true', () => {
+    expect(getDataClassification(false, 'official_sensitive', true)).toBe('(OFFICIAL SENSITIVE)')
+  })
+
+  test('returns empty string when isPublic is true', () => {
+    expect(getDataClassification(true, 'official_sensitive', true)).toBe('')
+  })
+
+  test('returns empty string when isPublic is undefined', () => {
+    expect(getDataClassification(undefined, 'official_sensitive', true)).toBe('')
+  })
+
+  test('returns uppercase classification wrapped in parentheses for official_sensitive', () => {
+    expect(getDataClassification(false, 'official_sensitive', true)).toBe('(OFFICIAL SENSITIVE)')
+  })
+
+  test('returns uppercase classification wrapped in parentheses for official', () => {
+    expect(getDataClassification(false, 'official', true)).toBe('(OFFICIAL)')
+  })
+
+  test('returns uppercase classification wrapped in parentheses for secret', () => {
+    expect(getDataClassification(false, 'secret', true)).toBe('(SECRET)')
+  })
+
+  test('returns uppercase classification wrapped in parentheses for top_secret', () => {
+    expect(getDataClassification(false, 'top_secret', true)).toBe('(TOP SECRET)')
+  })
+
+  test('returns uppercase classification wrapped in parentheses for protective_marking_not_set', () => {
+    expect(getDataClassification(false, 'protective_marking_not_set', true)).toBe('(PROTECTIVE MARKING NOT SET)')
+  })
+})
diff --git a/src/app/utils/table.utils.tsx b/src/app/utils/table.utils.tsx
index 1d7a00a10..f10dbed33 100644
--- a/src/app/utils/table.utils.tsx
+++ b/src/app/utils/table.utils.tsx
@@ -1,6 +1,6 @@
-type Level = 'official' | 'official_sensitive' | 'protective_marking_not_set' | 'secret' | 'top_secret'
+import { DataClassification } from '@/api/models/DataClassification'
 
-const levelContent: Record<Level, string> = {
+const levelContent: Record<DataClassification, string> = {
   official: 'Official',
   official_sensitive: 'Official-Sensitive',
   protective_marking_not_set: 'Protective marking not set',
@@ -8,12 +8,20 @@ const levelContent: Record<Level, string> = {
   top_secret: 'Top Secret',
 }
 
+const levelContentCaps: Record<DataClassification, string> = {
+  official: 'OFFICIAL',
+  official_sensitive: 'OFFICIAL SENSITIVE',
+  protective_marking_not_set: 'PROTECTIVE MARKING NOT SET',
+  secret: 'SECRET',
+  top_secret: 'TOP SECRET',
+}
+
 export const getColumnHeader = (
   chartLabel: string,
   axisTitle: string,
   fallback: string,
   isPublic?: boolean,
-  level: Level = 'official_sensitive',
+  level: DataClassification = 'official_sensitive',
   authEnabled?: boolean
 ) => {
   const label = chartLabel || axisTitle || fallback
@@ -28,3 +36,14 @@ export const getColumnHeader = (
     </>
   )
 }
+
+export const getDataClassification = (
+  isPublic: boolean | undefined,
+  pageClassification: DataClassification = 'official_sensitive',
+  authEnabled: boolean | undefined
+): string => {
+  if (authEnabled && isPublic === false) {
+    return `(${levelContentCaps[pageClassification]})`
+  }
+  return ''
+}