diff --git a/src/backends/backendsCommon/test/layerTests/SpaceToBatchNdTestImpl.hpp b/src/backends/backendsCommon/test/layerTests/SpaceToBatchNdTestImpl.hpp
index 4180187..69ee99b 100644
--- a/src/backends/backendsCommon/test/layerTests/SpaceToBatchNdTestImpl.hpp
+++ b/src/backends/backendsCommon/test/layerTests/SpaceToBatchNdTestImpl.hpp
@@ -14,159 +14,159 @@
 LayerTestResult<float, 4> SpaceToBatchNdSimpleFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdMultiChannelsFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdMultiBlockFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdPaddingFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdSimpleFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdMultiChannelsFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdMultiBlockFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdPaddingFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdSimpleUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdMultiChannelsUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdMultiBlockUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdPaddingUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdSimpleNhwcFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdMultiChannelsNhwcFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdMultiBlockNhwcFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<float, 4> SpaceToBatchNdPaddingNhwcFloat32Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdSimpleNhwcFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdMultiChannelsNhwcFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdMultiBlockNhwcFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<armnn::Half, 4> SpaceToBatchNdPaddingNhwcFloat16Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdSimpleNhwcUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdMultiChannelsNhwcUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdMultiBlockNhwcUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<uint8_t, 4> SpaceToBatchNdPaddingNhwcUint8Test(
     armnn::IWorkloadFactory& workloadFactory,
     const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-    armnn::ITensorHandleFactory* tensorHandleFactory);
+    const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdSimpleUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdMultiChannelsUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdMultiBlockUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdPaddingUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdSimpleNhwcUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdMultiChannelsNhwcUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdMultiBlockNhwcUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);
 
 LayerTestResult<int16_t, 4> SpaceToBatchNdPaddingNhwcUint16Test(
         armnn::IWorkloadFactory& workloadFactory,
         const armnn::IBackendInternal::IMemoryManagerSharedPtr& memoryManager,
-        armnn::ITensorHandleFactory* tensorHandleFactory);
+        const armnn::ITensorHandleFactory& tensorHandleFactory);