diff --git a/server/routes/index.test.ts b/server/routes/index.test.ts
index 16d9fd0..1910f65 100644
--- a/server/routes/index.test.ts
+++ b/server/routes/index.test.ts
@@ -16,7 +16,13 @@ describe('index.test.ts', () => {
     sendAuditMessage: sendAuditMessageMock,
   }))
 
+  jest.mock('uuid', () => ({
+    v1: jest.fn(() => 'mocked-uuid'),
+  }))
+
   beforeEach(() => {
+    jest.clearAllMocks()
+    jest.resetAllMocks()
     app = appWithAllRoutes({})
     jest.spyOn(auditService, 'sendAuditMessage').mockResolvedValue({} as never)
   })
@@ -34,14 +40,6 @@ describe('index.test.ts', () => {
   })
 
   it('GET /triggered-event', () => {
-    const mockPublishedEvent = {
-      action: 'TEST_EVENT',
-      who: 'user1',
-      subjectId: 'some user ID',
-      subjectType: 'USER_ID',
-      details: JSON.stringify({ testField: 'some value' }),
-    }
-
     return request(app)
       .get('/triggered-event')
       .expect('Content-Type', /html/)
@@ -60,12 +58,22 @@ describe('index.test.ts', () => {
           '<b>Subject Type:</b> The type of subject ID we are using. This is most commonly a user ID.',
         )
         expect(res.text).toContain('<b>Service:</b> Which service performed this action?')
+        expect(res.text).toContain('<b>Correlation ID:</b> An optional ID used to link multiple correlated events.')
         expect(res.text).toContain(
           '<b>Details:</b> Any additional details specific to this action that may be relevant can go here.',
         )
       })
       .expect(() => {
-        expect(auditService.sendAuditMessage).toBeCalledWith(mockPublishedEvent)
+        expect(auditService.sendAuditMessage).toBeCalledWith(
+          expect.objectContaining({
+            action: 'TEST_EVENT',
+            who: 'user1',
+            subjectId: 'some user ID',
+            subjectType: 'USER_ID',
+            correlationId: expect.stringMatching('^[0-9a-f]{8}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{4}-[0-9a-f]{12}$'),
+            details: JSON.stringify({ testField: 'some value' }),
+          }),
+        )
       })
   })
 })
diff --git a/server/routes/index.ts b/server/routes/index.ts
index c8ab2ea..23f4493 100644
--- a/server/routes/index.ts
+++ b/server/routes/index.ts
@@ -1,5 +1,6 @@
 import { type RequestHandler, Router } from 'express'
 
+import { v1 as uuidv1 } from 'uuid'
 import asyncMiddleware from '../middleware/asyncMiddleware'
 import type { Services } from '../services'
 import auditService from '../services/auditService'
@@ -20,6 +21,7 @@ export default function routes(service: Services): Router {
       who: username,
       subjectId: 'some user ID',
       subjectType: 'USER_ID',
+      correlationId: uuidv1(),
       details: JSON.stringify({ testField: 'some value' }),
     })
     res.render('pages/triggeredEvent', {
diff --git a/server/services/auditService.ts b/server/services/auditService.ts
index 7397784..2a5fb33 100644
--- a/server/services/auditService.ts
+++ b/server/services/auditService.ts
@@ -16,12 +16,14 @@ class AuditService {
     who,
     subjectId,
     subjectType,
+    correlationId,
     details,
   }: {
     action: string
     who: string
     subjectId?: string
     subjectType?: string
+    correlationId?: string
     details?: string
   }) {
     try {
@@ -31,6 +33,7 @@ class AuditService {
         who,
         subjectId,
         subjectType,
+        correlationId,
         service: config.apis.audit.serviceName,
         details,
       })
diff --git a/server/views/pages/triggeredEvent.njk b/server/views/pages/triggeredEvent.njk
index f60b453..5fbf1d0 100644
--- a/server/views/pages/triggeredEvent.njk
+++ b/server/views/pages/triggeredEvent.njk
@@ -23,6 +23,7 @@
             <b>Subject ID:</b> The subject against which the action was performed. For example, if the action being
             audited was a change of John's email address, then the subject ID is John's user ID.<br>
             <b>Subject Type:</b> The type of subject ID we are using. This is most commonly a user ID.<br>
+            <b>Correlation ID:</b> An optional ID used to link multiple correlated events.<br>
             <b>Service:</b> Which service performed this action?<br>
             <b>Details:</b> Any additional details specific to this action that may be relevant can go here. This can be
             anything but must be in the format of a stringifed JSON.<br>