diff --git a/dotnet-authserver/src/TeacherIdentity.AuthServer/AuthenticationState.cs b/dotnet-authserver/src/TeacherIdentity.AuthServer/AuthenticationState.cs
index 4aba50406..c6e5956b4 100644
--- a/dotnet-authserver/src/TeacherIdentity.AuthServer/AuthenticationState.cs
+++ b/dotnet-authserver/src/TeacherIdentity.AuthServer/AuthenticationState.cs
@@ -150,6 +150,8 @@ public AuthenticationState(
     [JsonIgnore]
     public bool HasTrnSet => HasTrn.HasValue;
     [JsonIgnore]
+    public bool StatedTrnSet => StatedTrn is not null;
+    [JsonIgnore]
     public bool NameSet => HasName.HasValue;
     [JsonIgnore]
     public bool DateOfBirthSet => DateOfBirth.HasValue;
diff --git a/dotnet-authserver/src/TeacherIdentity.AuthServer/Journeys/CoreSignInJourneyWithTrnLookup.cs b/dotnet-authserver/src/TeacherIdentity.AuthServer/Journeys/CoreSignInJourneyWithTrnLookup.cs
index 2a58972fd..09ebc77d5 100644
--- a/dotnet-authserver/src/TeacherIdentity.AuthServer/Journeys/CoreSignInJourneyWithTrnLookup.cs
+++ b/dotnet-authserver/src/TeacherIdentity.AuthServer/Journeys/CoreSignInJourneyWithTrnLookup.cs
@@ -118,8 +118,8 @@ public override bool IsCompleted()
         Steps.NiNumber => AuthenticationState is { HasNationalInsuranceNumber: true, ContactDetailsVerified: true },
         Steps.HasTrn => (AuthenticationState is ({ NationalInsuranceNumberSet: true } or { HasNationalInsuranceNumberSet: true, HasNationalInsuranceNumber: false }) and { ContactDetailsVerified: true }),
         Steps.Trn => AuthenticationState is { HasTrn: true, ContactDetailsVerified: true },
-        Steps.HasQts => AuthenticationState is ({ StatedTrn: { }, OAuthState: { TrnMatchPolicy: Models.TrnMatchPolicy.Default } } or { OAuthState: { TrnMatchPolicy: Models.TrnMatchPolicy.Default }, HasTrnSet: true, HasTrn: false }) and { ContactDetailsVerified: true },
-        Steps.IttProvider => AuthenticationState is { OAuthState: { TrnMatchPolicy: Models.TrnMatchPolicy.Default }, AwardedQts: true, ContactDetailsVerified: true },
+        Steps.HasQts => AuthenticationState is ({ StatedTrn: { }, OAuthState: { TrnMatchPolicy: TrnMatchPolicy.Default } } or { OAuthState: { TrnMatchPolicy: TrnMatchPolicy.Default }, HasTrnSet: true, HasTrn: false }) and { ContactDetailsVerified: true },
+        Steps.IttProvider => AuthenticationState is { OAuthState: { TrnMatchPolicy: TrnMatchPolicy.Default }, AwardedQts: true, ContactDetailsVerified: true },
         SignInJourney.Steps.TrnInUse => AuthenticationState.TrnLookup == AuthenticationState.TrnLookupState.ExistingTrnFound,
         SignInJourney.Steps.TrnInUseResendTrnOwnerEmailConfirmation => AuthenticationState.TrnLookup == AuthenticationState.TrnLookupState.ExistingTrnFound,
         SignInJourney.Steps.TrnInUseChooseEmail => AuthenticationState.TrnLookup == AuthenticationState.TrnLookupState.EmailOfExistingAccountForTrnVerified,
@@ -152,7 +152,7 @@ public override string GetNextStepUrl(string currentStep) =>
             (Steps.HasNiNumber, { HasNationalInsuranceNumber: false }) => shouldCheckAnswers ? CoreSignInJourney.Steps.CheckAnswers : Steps.HasTrn,
             (Steps.NiNumber, _) => shouldCheckAnswers ? CoreSignInJourney.Steps.CheckAnswers : Steps.HasTrn,
             (Steps.HasTrn, { HasTrn: true }) => Steps.Trn,
-            (Steps.HasTrn, { HasTrn: false, OAuthState.TrnMatchPolicy: Models.TrnMatchPolicy.Strict }) => CoreSignInJourney.Steps.CheckAnswers,
+            (Steps.HasTrn, { HasTrn: false, OAuthState.TrnMatchPolicy: TrnMatchPolicy.Strict }) => CoreSignInJourney.Steps.CheckAnswers,
             (Steps.HasTrn, { HasTrn: false }) => shouldCheckAnswers ? CoreSignInJourney.Steps.CheckAnswers : Steps.HasQts,
             (Steps.Trn, _) => shouldCheckAnswers ? CoreSignInJourney.Steps.CheckAnswers : Steps.HasQts,
             (Steps.HasQts, { AwardedQts: true }) => Steps.IttProvider,
@@ -229,8 +229,10 @@ protected override bool AreAllQuestionsAnswered() =>
         AuthenticationState.DateOfBirthSet &&
         AuthenticationState.HasNationalInsuranceNumberSet &&
         (AuthenticationState.NationalInsuranceNumberSet || AuthenticationState.HasNationalInsuranceNumber == false) &&
-        ((AuthenticationState.AwardedQtsSet &&
-        (AuthenticationState.HasIttProviderSet || AuthenticationState.AwardedQts == false) || (AuthenticationState.AwardedQtsSet == false && AuthenticationState?.OAuthState?.TrnMatchPolicy == Models.TrnMatchPolicy.Strict)));
+        AuthenticationState.HasTrnSet &&
+        (AuthenticationState.StatedTrnSet || AuthenticationState.HasTrn == false) &&
+        (AuthenticationState.AwardedQtsSet &&
+            (AuthenticationState.HasIttProviderSet || AuthenticationState.AwardedQts == false) || (AuthenticationState.AwardedQtsSet == false && AuthenticationState?.OAuthState?.TrnMatchPolicy == TrnMatchPolicy.Strict));
 
     public new static class Steps
     {
diff --git a/dotnet-authserver/tests/TeacherIdentity.AuthServer.EndToEndTests/Register.cs b/dotnet-authserver/tests/TeacherIdentity.AuthServer.EndToEndTests/Register.cs
index f4fef35ab..cf71dec16 100644
--- a/dotnet-authserver/tests/TeacherIdentity.AuthServer.EndToEndTests/Register.cs
+++ b/dotnet-authserver/tests/TeacherIdentity.AuthServer.EndToEndTests/Register.cs
@@ -113,6 +113,10 @@ public async Task NewUser_WithTrnLookup_TrnNotFound_CanRegister_StrictTrnMatchPo
 
         await page.SubmitRegisterNiNumberPage(nino);
 
+        await page.SubmitRegisterHasTrnPage(hasTrn: true);
+
+        await page.SubmitRegisterTrnPage(trn);
+
         await page.SubmitCheckAnswersPage();
 
         await page.SubmitCompletePageForNewUser(email);