diff --git a/HISTORY.rst b/HISTORY.rst
index 33155c8f..8e4e68d3 100644
--- a/HISTORY.rst
+++ b/HISTORY.rst
@@ -5,10 +5,13 @@ History
 Unreleased / master
 -------------------
 
+3.0.0 (2023-11-16)
+-------------------
+
 * Tables:
 
   * Drop: ``MotionCorrectionDrift`` and remove it from schema files
-  * Add: ``BFactorFit`` with foreign key referencing  ``ParticleClassification``
+  * Add: ``BFactorFit`` with foreign key referencing ``ParticleClassification``
 
 * Columns and keys:
 
@@ -33,6 +36,7 @@ Unreleased / master
 * Misc:
 
   * Add: maintenance script to delete a given number of rows from a table, and then rebuild the table to reclaim the space for the OS
+  * Add: maintenance script to update BLSample.subLocation via a cursor in order to remove rows with duplications of (containerId, location, subLocation)
   * Add: ``SELECT`` grants on ``ProcessingJob``, ``ProcessingJobImageSweep`` tables for role ``ispyb_scripts_processing``
 
 2.1.0 (2023-06-05)
diff --git a/schemas/ispyb/data.sql b/schemas/ispyb/data.sql
index 65948115..5c0abcfd 100644
--- a/schemas/ispyb/data.sql
+++ b/schemas/ispyb/data.sql
@@ -343,19 +343,19 @@ INSERT INTO `ComponentLattice` (`componentLatticeId`, `componentId`, `spaceGroup
 /*!40000 ALTER TABLE `Component_has_SubType` ENABLE KEYS */;
 
 /*!40000 ALTER TABLE `Container` DISABLE KEYS */;
-INSERT INTO `Container` (`containerId`, `dewarId`, `code`, `containerType`, `capacity`, `sampleChangerLocation`, `containerStatus`, `bltimeStamp`, `beamlineLocation`, `screenId`, `scheduleId`, `barcode`, `imagerId`, `sessionId`, `ownerId`, `requestedImagerId`, `requestedReturn`, `comments`, `experimentType`, `storageTemperature`, `containerRegistryId`, `scLocationUpdated`, `priorityPipelineId`, `experimentTypeId`, `containerTypeId`, `currentDewarId`) VALUES (1326,573,'Container-1-cm0001-1','Puck-16',16,'3','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000001',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,4,NULL,NULL,NULL,NULL,NULL),
-(1329,573,'Container-2-cm0001-1','Puck-16',16,'4','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000002',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(1332,576,'Container-3-cm0001-1','Puck-16',16,'5','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000003',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(1335,579,'Container-4-cm0001-2','Puck-16',16,'6','processing',NULL,'i03',NULL,NULL,'container-cm0001-2-0001335',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(1338,582,'Container-5-cm0001-3','Puck-16',16,'7','processing',NULL,'i03',NULL,NULL,'container-cm0001-3-0001338',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(1341,573,'Manual',NULL,NULL,'9',NULL,NULL,'i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(33049,8287,'cm14451-1_i03r-002','Puck',16,NULL,'at DLS',NULL,'i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34864,8572,'I03R-001','Puck',16,'29','processing','2016-02-24 12:13:05','i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34874,8572,'test_plate2','CrystalQuickX',192,'3','in_storage','2016-02-12 09:20:44','i03',NULL,2,'test_plate2',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34877,8572,'test_plate3','CrystalQuickX',192,'3','in_storage','2016-10-04 10:50:05','i03',NULL,2,'test_plate3',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34879,8572,'test_plate4','CrystalQuickX',192,'4','processing',NULL,'i02-2',NULL,2,'test_plate4',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34883,NULL,'XPDF-container-1','XPDF container',NULL,NULL,'processing',NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
-(34888,8578,'TestSim01','CrystalQuickX',192,'1','in_storage',NULL,'i02-2',NULL,2,'VMXiSim-001',7,339535,1,7,0,NULL,NULL,NULL,5,NULL,NULL,NULL,NULL,NULL);
+INSERT INTO `Container` (`containerId`, `dewarId`, `code`, `containerType`, `capacity`, `sampleChangerLocation`, `containerStatus`, `bltimeStamp`, `beamlineLocation`, `screenId`, `scheduleId`, `barcode`, `imagerId`, `sessionId`, `ownerId`, `requestedImagerId`, `requestedReturn`, `comments`, `experimentType`, `storageTemperature`, `containerRegistryId`, `scLocationUpdated`, `priorityPipelineId`, `experimentTypeId`, `containerTypeId`, `currentDewarId`, `parentContainerId`) VALUES (1326,573,'Container-1-cm0001-1','Puck-16',16,'3','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000001',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,4,NULL,NULL,NULL,NULL,NULL,NULL),
+(1329,573,'Container-2-cm0001-1','Puck-16',16,'4','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000002',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(1332,576,'Container-3-cm0001-1','Puck-16',16,'5','processing',NULL,'i03',NULL,NULL,'container-cm0001-1-0000003',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(1335,579,'Container-4-cm0001-2','Puck-16',16,'6','processing',NULL,'i03',NULL,NULL,'container-cm0001-2-0001335',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(1338,582,'Container-5-cm0001-3','Puck-16',16,'7','processing',NULL,'i03',NULL,NULL,'container-cm0001-3-0001338',NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(1341,573,'Manual',NULL,NULL,'9',NULL,NULL,'i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(33049,8287,'cm14451-1_i03r-002','Puck',16,NULL,'at DLS',NULL,'i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34864,8572,'I03R-001','Puck',16,'29','processing','2016-02-24 12:13:05','i03',NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34874,8572,'test_plate2','CrystalQuickX',192,'3','in_storage','2016-02-12 09:20:44','i03',NULL,2,'test_plate2',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34877,8572,'test_plate3','CrystalQuickX',192,'3','in_storage','2016-10-04 10:50:05','i03',NULL,2,'test_plate3',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34879,8572,'test_plate4','CrystalQuickX',192,'4','processing',NULL,'i02-2',NULL,2,'test_plate4',2,NULL,NULL,2,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34883,NULL,'XPDF-container-1','XPDF container',NULL,NULL,'processing',NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,0,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL,NULL),
+(34888,8578,'TestSim01','CrystalQuickX',192,'1','in_storage',NULL,'i02-2',NULL,2,'VMXiSim-001',7,339535,1,7,0,NULL,NULL,NULL,5,NULL,NULL,NULL,NULL,NULL,NULL);
 /*!40000 ALTER TABLE `Container` ENABLE KEYS */;
 
 /*!40000 ALTER TABLE `ContainerHistory` DISABLE KEYS */;
diff --git a/schemas/ispyb/lookups.sql b/schemas/ispyb/lookups.sql
index 37b7c262..26d17e53 100644
--- a/schemas/ispyb/lookups.sql
+++ b/schemas/ispyb/lookups.sql
@@ -10,7 +10,7 @@
 /*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;
 
 /*!40000 ALTER TABLE `AdminVar` DISABLE KEYS */;
-INSERT INTO `AdminVar` (`varId`, `name`, `value`) VALUES (4,'schemaVersion','2.1.0');
+INSERT INTO `AdminVar` (`varId`, `name`, `value`) VALUES (4,'schemaVersion','3.0.0');
 /*!40000 ALTER TABLE `AdminVar` ENABLE KEYS */;
 
 /*!40000 ALTER TABLE `SchemaStatus` DISABLE KEYS */;
diff --git a/schemas/ispyb/updates/2023_11_16_AdminVar_bump_version.sql b/schemas/ispyb/updates/2023_11_16_AdminVar_bump_version.sql
new file mode 100644
index 00000000..41c379f9
--- /dev/null
+++ b/schemas/ispyb/updates/2023_11_16_AdminVar_bump_version.sql
@@ -0,0 +1,5 @@
+INSERT IGNORE INTO SchemaStatus (scriptName, schemaStatus) VALUES ('2023_06_05_AdminVar_bump_version.sql', 'ONGOING');
+
+UPDATE AdminVar SET `value` = '3.0.0' WHERE `name` = 'schemaVersion';
+
+UPDATE SchemaStatus SET schemaStatus = 'DONE' WHERE scriptName = '2023_06_05_AdminVar_bump_version.sql';