diff --git a/projects/assessment-summary-and-delius/src/integrationTest/kotlin/uk/gov/justice/digital/hmpps/IntegrationTest.kt b/projects/assessment-summary-and-delius/src/integrationTest/kotlin/uk/gov/justice/digital/hmpps/IntegrationTest.kt
index 6db9497cc..3d7637d02 100644
--- a/projects/assessment-summary-and-delius/src/integrationTest/kotlin/uk/gov/justice/digital/hmpps/IntegrationTest.kt
+++ b/projects/assessment-summary-and-delius/src/integrationTest/kotlin/uk/gov/justice/digital/hmpps/IntegrationTest.kt
@@ -3,6 +3,7 @@ package uk.gov.justice.digital.hmpps
 import com.fasterxml.jackson.databind.ObjectMapper
 import com.fasterxml.jackson.module.kotlin.readValue
 import com.github.tomakehurst.wiremock.WireMockServer
+import jakarta.persistence.EntityManager
 import org.hamcrest.MatcherAssert.assertThat
 import org.hamcrest.Matchers
 import org.hamcrest.Matchers.*
@@ -76,6 +77,9 @@ internal class IntegrationTest {
     @Autowired
     lateinit var objectMapper: ObjectMapper
 
+    @Autowired
+    lateinit var entityManager: EntityManager
+
     @MockBean
     lateinit var telemetryService: TelemetryService
 
@@ -357,6 +361,8 @@ internal class IntegrationTest {
         val riskToAdultBefore =
             registrationRepository.findByPersonIdAndTypeCode(person.id, RiskType.KNOWN_ADULT.code).single()
         assertThat(riskToAdultBefore.level?.code, equalTo(RiskLevel.M.code))
+        assertThat(riskToAdultBefore.reviews, hasSize(1))
+        val riskToAdultReviewId = riskToAdultBefore.reviews.single().id
         val riskToPublicBefore =
             registrationRepository.findByPersonIdAndTypeCode(person.id, RiskType.PUBLIC.code).single()
         assertThat(riskToPublicBefore.level?.code, equalTo(RiskLevel.M.code))
@@ -398,6 +404,7 @@ internal class IntegrationTest {
         val riskToAdult = registrationRepository.findByPersonIdAndTypeCode(person.id, RiskType.KNOWN_ADULT.code)
         assertThat(riskToAdult, hasSize(0))
         assertThat(domainEvents.ofType(RiskType.KNOWN_ADULT), hasSize(1))
+        assertThat(entityManager.find(RegistrationReview::class.java, riskToAdultReviewId), nullValue())
 
         val riskToPublic = registrationRepository.findByPersonIdAndTypeCode(person.id, RiskType.PUBLIC.code).single()
         assertThat(riskToPublic.level?.code, equalTo(RiskLevel.V.code))
diff --git a/projects/assessment-summary-and-delius/src/main/kotlin/uk/gov/justice/digital/hmpps/integrations/delius/person/entity/Registration.kt b/projects/assessment-summary-and-delius/src/main/kotlin/uk/gov/justice/digital/hmpps/integrations/delius/person/entity/Registration.kt
index 3f9450bca..0d52de815 100644
--- a/projects/assessment-summary-and-delius/src/main/kotlin/uk/gov/justice/digital/hmpps/integrations/delius/person/entity/Registration.kt
+++ b/projects/assessment-summary-and-delius/src/main/kotlin/uk/gov/justice/digital/hmpps/integrations/delius/person/entity/Registration.kt
@@ -69,24 +69,22 @@ class Registration(
     var deregistration: DeRegistration? = null
         private set
 
-    @OneToMany(mappedBy = "registration", cascade = [CascadeType.ALL])
+    @OneToMany(mappedBy = "registration", cascade = [CascadeType.ALL], orphanRemoval = true)
     @OrderBy("date, createdDatetime")
-    var reviews: List<RegistrationReview> = listOf()
+    var reviews: MutableList<RegistrationReview> = mutableListOf()
         private set
 
     fun withReview(contact: Contact): Registration {
-        reviews = reviews + RegistrationReview(personId, this, contact, nextReviewDate, null, teamId, staffId)
+        reviews += RegistrationReview(personId, this, contact, nextReviewDate, null, teamId, staffId)
         return this
     }
 
-    fun deregister(contact: Contact): List<Contact> {
+    fun deregister(contact: Contact) {
         deregistration = DeRegistration(LocalDate.now(), this, personId, contact, contact.teamId, contact.staffId)
         deregistered = true
         nextReviewDate = null
-        val splitReviews = reviews.groupBy { it.completed }
-        reviews = splitReviews[true] ?: listOf()
+        reviews.removeIf { !it.completed }
         reviews.firstOrNull()?.reviewDue = null
-        return splitReviews[false]?.map { it.contact } ?: listOf()
     }
 }