diff --git a/service-api/app/src/App/src/Exception/ActorDateOfBirthNotSetException.php b/service-api/app/src/App/src/Exception/ActorDateOfBirthNotSetException.php
new file mode 100644
index 0000000000..f7f87941e7
--- /dev/null
+++ b/service-api/app/src/App/src/Exception/ActorDateOfBirthNotSetException.php
@@ -0,0 +1,20 @@
+<?php
+
+declare(strict_types=1);
+
+namespace App\Exception;
+
+use Fig\Http\Message\StatusCodeInterface;
+use Throwable;
+
+class ActorDateOfBirthNotSetException extends AbstractApiException
+{
+    public const MESSAGE = 'Actor date of birth is not set';
+    public const TITLE   = 'DOB Not Found';
+    public const CODE    = StatusCodeInterface::STATUS_NOT_FOUND;
+
+    public function __construct(?string $message = null, array $additionalData = [], ?Throwable $previous = null)
+    {
+        parent::__construct(self::TITLE, $message, self::CODE, $additionalData, $previous);
+    }
+}
diff --git a/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php b/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
index cdfd8d3676..3b224ada00 100644
--- a/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
+++ b/service-api/app/src/App/src/Service/Lpa/FindActorInLpa.php
@@ -4,6 +4,7 @@
 
 namespace App\Service\Lpa;
 
+use App\Exception\ActorDateOfBirthNotSetException;
 use App\Service\Lpa\FindActorInLpa\ActorMatch;
 use App\Service\Lpa\FindActorInLpa\ActorMatchingInterface;
 use App\Service\Lpa\FindActorInLpa\FindActorInLpaInterface;
@@ -129,17 +130,28 @@ private function checkForActorMatch(ActorMatchingInterface $actor, array $matchD
         $this->logger->debug(
             'Doing actor data comparison against actor with id {actor_id}',
             [
-                'actor_id'   => $actor->getUid(),
-                'to_match'   => $matchData,
-                'actor_data' => array_merge($actorData, ['dob' => $actor->getDob()]),
+                'actor_id' => $actor->getUid(),
+                'to_match' => $matchData,
             ]
         );
 
         $match = self::MATCH;
+        try {
+            $match = $actor->getDob()->format('Y-m-d') !== $matchData['dob']
+                ? $match | self::NO_MATCH__DOB
+                : $match;
+        } catch (ActorDateOfBirthNotSetException $exception) {
+            $this->logger->warning(
+                'Actor DOB is null',
+                [
+                    'actor_id' => $actor->getUid(),
+                    'error'    => $exception->getMessage(),
+                ]
+            );
+
+            return self::NO_MATCH__DOB;
+        }
 
-        $match = $actor->getDob()->format('Y-m-d') !== $matchData['dob']
-            ? $match | self::NO_MATCH__DOB
-            : $match;
         $match = $actorData['first_names'] !== $matchData['first_names']
             ? $match | self::NO_MATCH__FIRSTNAMES
             : $match;
diff --git a/service-api/app/src/App/src/Service/Lpa/SiriusPerson.php b/service-api/app/src/App/src/Service/Lpa/SiriusPerson.php
index 03dc1f8a47..966f8bd081 100644
--- a/service-api/app/src/App/src/Service/Lpa/SiriusPerson.php
+++ b/service-api/app/src/App/src/Service/Lpa/SiriusPerson.php
@@ -4,11 +4,13 @@
 
 namespace App\Service\Lpa;
 
+use App\Exception\ActorDateOfBirthNotSetException;
 use App\Service\Lpa\AccessForAll\AddAccessForAllActorInterface;
 use App\Service\Lpa\FindActorInLpa\ActorMatchingInterface;
 use App\Service\Lpa\GetAttorneyStatus\GetAttorneyStatusInterface;
 use App\Service\Lpa\GetTrustCorporationStatus\GetTrustCorporationStatusInterface;
 use ArrayAccess;
+use Exception;
 use DateTimeImmutable;
 use DateTimeInterface;
 use IteratorAggregate;
@@ -81,8 +83,15 @@ public function getPostcode(): string
         return (string)$this->person['addresses'][0]['postcode'];
     }
 
+    /**
+     * @throws Exception
+     */
     public function getDob(): DateTimeInterface
     {
+        if (is_null($this->person['dob'])) {
+            throw new ActorDateOfBirthNotSetException('Actor DOB is not set');
+        }
+
         return new DateTimeImmutable($this->person['dob']);
     }
 
diff --git a/service-api/app/test/AppTest/Service/Lpa/FindActorInLpaTest.php b/service-api/app/test/AppTest/Service/Lpa/FindActorInLpaTest.php
index 2613bb54f8..8ef9b85be0 100644
--- a/service-api/app/test/AppTest/Service/Lpa/FindActorInLpaTest.php
+++ b/service-api/app/test/AppTest/Service/Lpa/FindActorInLpaTest.php
@@ -9,6 +9,7 @@
 use App\Entity\Sirius\SiriusLpa as CombinedSiriusLpa;
 use App\Entity\Sirius\SiriusLpaAttorney;
 use App\Entity\Sirius\SiriusLpaDonor;
+use App\Exception\ActorDateOfBirthNotSetException;
 use App\Service\Lpa\FindActorInLpa;
 use App\Service\Lpa\FindActorInLpa\ActorMatch;
 use App\Service\Lpa\GetAttorneyStatus;
@@ -50,6 +51,7 @@ public function returns_actor_and_lpa_details_if_match_found(?ActorMatch $expect
                     $this->ghostAttorneyFixtureOld(),
                     $this->multipleAddressAttorneyFixtureOld(),
                     $this->activeAttorneyFixtureOld(),
+                    $this->nullDOBAttorneyFixtureOld(),
                 ],
             ],
             $this->loggerProphecy->reveal(),
@@ -71,9 +73,13 @@ public function returns_actor_and_lpa_details_if_match_found(?ActorMatch $expect
             ->__invoke($this->activeAttorneyFixtureOld())
             ->willReturn(AttorneyStatus::ACTIVE_ATTORNEY); // active attorney
 
+        $this->getAttorneyStatusProphecy
+            ->__invoke($this->nullDOBAttorneyFixtureOld())
+            ->willReturn(AttorneyStatus::ACTIVE_ATTORNEY); // null DoB
+
         $sut = new FindActorInLpa(
             $this->getAttorneyStatusProphecy->reveal(),
-            $this->loggerProphecy->reveal()
+            $this->loggerProphecy->reveal(),
         );
 
         $matchData = $sut($lpa, $userData);
@@ -90,6 +96,7 @@ public function returns_actor_and_lpa_details_if_match_found_combined_sirius(
             $this->inactiveAttorneyFixture(),
             $this->ghostAttorneyFixture(),
             $this->activeAttorneyFixture(),
+            $this->nullDOBAttorneyFixture(),
         ];
 
         $lpa = new CombinedSiriusLpa(
@@ -132,6 +139,10 @@ public function returns_actor_and_lpa_details_if_match_found_combined_sirius(
             ->__invoke($this->activeAttorneyFixture())
             ->willReturn(AttorneyStatus::ACTIVE_ATTORNEY); // active attorney
 
+        $this->getAttorneyStatusProphecy
+            ->__invoke($this->nullDOBAttorneyFixture())
+            ->willReturn(AttorneyStatus::ACTIVE_ATTORNEY); // null DoB
+
         $sut = new FindActorInLpa(
             $this->getAttorneyStatusProphecy->reveal(),
             $this->loggerProphecy->reveal()
@@ -442,4 +453,46 @@ private static function donorFixture(): SiriusLpaDonor
             uId:          '700000001111'
         );
     }
+
+    public static function nullDOBAttorneyFixtureOld(): SiriusPerson
+    {
+        return new SiriusPerson(
+            [
+                'uId'          => '7000000055555',
+                'dob'          => null,
+                'firstname'    => 'Testering',
+                'surname'      => 'Testing',
+                'addresses'    => [
+                    [
+                        'postcode' => 'Ab1 2Cd',
+                    ],
+                ],
+                'systemStatus' => true,
+            ],
+            new Logger('test-output'),
+        );
+    }
+
+    public static function nullDOBAttorneyFixture(): SiriusLpaAttorney
+    {
+        return new SiriusLpaAttorney(
+            addressLine1: null,
+            addressLine2: null,
+            addressLine3: null,
+            country:      null,
+            county:       null,
+            dob:          null,
+            email:        null,
+            firstname:    'Testering',
+            id:           '7',
+            middlenames:  null,
+            otherNames:   null,
+            postcode:     'PY1 3Kd',
+            surname:      'Person',
+            systemStatus: null,
+            town:         null,
+            type:         null,
+            uId:          '700000001111'
+        );
+    }
 }