diff --git a/tests/validation/CL/ActivationLayer.cpp b/tests/validation/CL/ActivationLayer.cpp
index a17ad9b..8b12b0b 100644
--- a/tests/validation/CL/ActivationLayer.cpp
+++ b/tests/validation/CL/ActivationLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 ARM Limited.
+ * Copyright (c) 2017-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -235,15 +235,17 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance(_function, _data_type));
 }
-FIXTURE_DATA_TEST_CASE(RunLarge, CLActivationLayerQuantizedFixture<uint8_t>, framework::DatasetMode::NIGHTLY, combine(combine(combine(datasets::LargeShapes(), QuantizedActivationDataset),
-                                                                                                                      framework::dataset::make("DataType",
-                                                                                                                              DataType::QASYMM8)),
-                                                                                                                      framework::dataset::make("QuantizationInfo", { QuantizationInfo(0.1f, 128.0f) })))
+TEST_SUITE_END() // QASYMM8
+TEST_SUITE(QASYMM8_SIGNED)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLActivationLayerQuantizedFixture<int8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(datasets::SmallShapes(), QuantizedActivationDataset),
+                                                                                                                       framework::dataset::make("DataType",
+                                                                                                                               DataType::QASYMM8_SIGNED)),
+                                                                                                                       framework::dataset::make("QuantizationInfo", { QuantizationInfo(0.1f, 10.0f) })))
 {
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance(_function, _data_type));
 }
-TEST_SUITE_END() // QASYMM8
+TEST_SUITE_END() // QASYMM8_SIGNED
 TEST_SUITE(QSYMM16)
 FIXTURE_DATA_TEST_CASE(RunSmall, CLActivationLayerQuantizedFixture<int16_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(datasets::SmallShapes(), QuantizedActivationDataset),
                                                                                                                         framework::dataset::make("DataType",
diff --git a/tests/validation/CL/NormalizePlanarYUVLayer.cpp b/tests/validation/CL/NormalizePlanarYUVLayer.cpp
index 31e0625..54fff01 100644
--- a/tests/validation/CL/NormalizePlanarYUVLayer.cpp
+++ b/tests/validation/CL/NormalizePlanarYUVLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2018 ARM Limited.
+ * Copyright (c) 2018-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -123,7 +123,7 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_f16, 0);
 }
-TEST_SUITE_END()
+TEST_SUITE_END() // FP16
 
 TEST_SUITE(FP32)
 FIXTURE_DATA_TEST_CASE(Random, CLNormalizePlanarYUVLayerFixture<float>, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::RandomNormalizePlanarYUVLayerDataset(),
@@ -133,8 +133,8 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_f32);
 }
-TEST_SUITE_END()
-TEST_SUITE_END()
+TEST_SUITE_END() // FP32
+TEST_SUITE_END() // Float
 
 template <typename T>
 using CLNormalizePlanarYUVLayerQuantizedFixture = NormalizePlanarYUVLayerValidationQuantizedFixture<CLTensor, CLAccessor, CLNormalizePlanarYUVLayer, T>;
@@ -143,17 +143,27 @@
 TEST_SUITE(QASYMM8)
 FIXTURE_DATA_TEST_CASE(Random, CLNormalizePlanarYUVLayerQuantizedFixture<uint8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(datasets::RandomNormalizePlanarYUVLayerDataset(),
                        framework::dataset::make("DataType", DataType::QASYMM8)),
-                       framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC })),
+                       framework::dataset::make("DataLayout", { DataLayout::NHWC })),
                        framework::dataset::make("QuantizationInfo", { QuantizationInfo(0.1f, 128.0f) })))
 {
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_qasymm8, 0);
 }
-TEST_SUITE_END()
-TEST_SUITE_END()
+TEST_SUITE_END() // QASYMM8
+TEST_SUITE(QASYMM8_SIGNED)
+FIXTURE_DATA_TEST_CASE(Random, CLNormalizePlanarYUVLayerQuantizedFixture<int8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(datasets::RandomNormalizePlanarYUVLayerDataset(),
+                       framework::dataset::make("DataType", DataType::QASYMM8_SIGNED)),
+                       framework::dataset::make("DataLayout", { DataLayout::NCHW })),
+                       framework::dataset::make("QuantizationInfo", { QuantizationInfo(0.1f, 128.0f) })))
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference, tolerance_qasymm8, 0);
+}
+TEST_SUITE_END() // QASYMM8_SIGNED
+TEST_SUITE_END() // Quantized
 
-TEST_SUITE_END()
-TEST_SUITE_END()
+TEST_SUITE_END() // NormalizePlanarYUVLayer
+TEST_SUITE_END() // CL
 } // namespace validation
 } // namespace test
 } // namespace arm_compute
diff --git a/tests/validation/CL/PReluLayer.cpp b/tests/validation/CL/PReluLayer.cpp
index 32fb2a1..ce678d9 100644
--- a/tests/validation/CL/PReluLayer.cpp
+++ b/tests/validation/CL/PReluLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2019 ARM Limited.
+ * Copyright (c) 2019-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -54,6 +54,9 @@
 const auto PReluLayerQASYMM8Dataset = combine(combine(framework::dataset::make("DataType", DataType::QASYMM8), framework::dataset::make("DataType", DataType::QASYMM8)),
                                               framework::dataset::make("DataType",
                                                                        DataType::QASYMM8));
+const auto PReluLayerQASYMM8SIGNEDDataset = combine(combine(framework::dataset::make("DataType", DataType::QASYMM8_SIGNED), framework::dataset::make("DataType", DataType::QASYMM8_SIGNED)),
+                                                    framework::dataset::make("DataType",
+                                                                             DataType::QASYMM8_SIGNED));
 const auto PReluLayerS16Dataset = combine(combine(framework::dataset::make("DataType", { DataType::U8, DataType::S16 }), framework::dataset::make("DataType", DataType::S16)),
                                           framework::dataset::make("DataType", DataType::S16));
 const auto PReluLayerFP16Dataset = combine(combine(framework::dataset::make("DataType", DataType::F16), framework::dataset::make("DataType", DataType::F16)),
@@ -165,7 +168,21 @@
                       )
 {
     // Validate output
-    validate(CLAccessor(_target), _reference, tolerance_fp32, 0.01);
+    validate(CLAccessor(_target), _reference);
+}
+TEST_SUITE_END()
+
+TEST_SUITE(QASYMM8_SIGNED)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLPReluLayerQuantizedFixture<int8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(combine(datasets::SmallShapes(),
+                                                                                                                  PReluLayerQASYMM8SIGNEDDataset),
+                                                                                                                  framework::dataset::make("QuantizationInfo", { QuantizationInfo(5.f / 127.f, 20) })),
+                                                                                                                  framework::dataset::make("QuantizationInfo", { QuantizationInfo(2.f / 127.f, 10) })),
+                                                                                                                  framework::dataset::make("QuantizationInfo", { QuantizationInfo(1.f / 127.f, 5) }))
+
+                      )
+{
+    // Validate output
+    validate(CLAccessor(_target), _reference);
 }
 TEST_SUITE_END()
 TEST_SUITE_END()
@@ -211,8 +228,7 @@
 TEST_SUITE_END()
 
 TEST_SUITE(FP32)
-DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, datasets::SmallShapes(),
-               shape)
+DATA_TEST_CASE(Configuration, framework::DatasetMode::ALL, datasets::SmallShapes(), shape)
 {
     // Create tensors
     CLTensor ref_src1 = create_tensor<CLTensor>(shape, DataType::F32);
diff --git a/tests/validation/CL/PixelWiseMultiplication.cpp b/tests/validation/CL/PixelWiseMultiplication.cpp
index 22ff9f2..3b55e25 100644
--- a/tests/validation/CL/PixelWiseMultiplication.cpp
+++ b/tests/validation/CL/PixelWiseMultiplication.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 ARM Limited.
+ * Copyright (c) 2017-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -139,8 +139,11 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_qasymm8);
 }
-FIXTURE_DATA_TEST_CASE(RunLarge, CLPixelWiseMultiplicationQuantizedFixture<uint8_t>, framework::DatasetMode::NIGHTLY, combine(combine(combine(combine(combine(combine(combine(datasets::LargeShapes(),
-                       framework::dataset::make("DataType", DataType::QASYMM8)),
+TEST_SUITE_END() // QASYMM8
+
+TEST_SUITE(QASYMM8_SIGNED)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLPixelWiseMultiplicationQuantizedFixture<int8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(combine(combine(combine(combine(datasets::SmallShapes(),
+                       framework::dataset::make("DataType", DataType::QASYMM8_SIGNED)),
                        framework::dataset::make("Scale", { 1.f, 2.f })),
                        framework::dataset::make("ConvertPolicy", { ConvertPolicy::SATURATE })),
                        framework::dataset::make("RoundingPolicy", RoundingPolicy::TO_NEAREST_EVEN)),
@@ -151,7 +154,8 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_qasymm8);
 }
-TEST_SUITE_END() // QASYMM8
+TEST_SUITE_END() // QASYMM8_SIGNED
+
 TEST_SUITE(QSYMM16)
 FIXTURE_DATA_TEST_CASE(RunSmall, CLPixelWiseMultiplicationQuantizedFixture<int16_t>, framework::DatasetMode::PRECOMMIT, combine(combine(combine(combine(combine(combine(combine(datasets::SmallShapes(),
                        framework::dataset::make("DataType", DataType::QSYMM16)),
diff --git a/tests/validation/CL/PoolingLayer.cpp b/tests/validation/CL/PoolingLayer.cpp
index ff7c24f..262cea3 100644
--- a/tests/validation/CL/PoolingLayer.cpp
+++ b/tests/validation/CL/PoolingLayer.cpp
@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2017-2019 ARM Limited.
+ * Copyright (c) 2017-2020 ARM Limited.
  *
  * SPDX-License-Identifier: MIT
  *
@@ -71,9 +71,10 @@
 framework::dataset::make("PadStride", { PadStrideInfo(1, 2, 1, 1) })),
 framework::dataset::make("ExcludePadding", { true }));
 
-constexpr AbsoluteTolerance<float>   tolerance_f32(0.001f); /**< Tolerance value for comparing reference's output against implementation's output for 32-bit floating-point type */
-constexpr AbsoluteTolerance<float>   tolerance_f16(0.01f);  /**< Tolerance value for comparing reference's output against implementation's output for 16-bit floating-point type */
-constexpr AbsoluteTolerance<uint8_t> tolerance_qasymm8(1);  /**< Tolerance value for comparing reference's output against implementation's output for 8-bit asymmetric type */
+constexpr AbsoluteTolerance<float>   tolerance_f32(0.001f);  /**< Tolerance value for comparing reference's output against implementation's output for 32-bit floating-point type */
+constexpr AbsoluteTolerance<float>   tolerance_f16(0.01f);   /**< Tolerance value for comparing reference's output against implementation's output for 16-bit floating-point type */
+constexpr AbsoluteTolerance<uint8_t> tolerance_qasymm8(1);   /**< Tolerance value for comparing reference's output against implementation's output for 8-bit asymmetric type */
+constexpr AbsoluteTolerance<int8_t>  tolerance_qasymm8_s(1); /**< Tolerance value for comparing reference's output against implementation's output for 8-bit signed asymmetric type */
 const auto                           pool_data_layout_dataset = framework::dataset::make("DataLayout", { DataLayout::NCHW, DataLayout::NHWC });
 
 const auto pool_fp_mixed_precision_dataset = framework::dataset::make("FpMixedPrecision", { true, false });
@@ -188,14 +189,17 @@
     // Validate output
     validate(CLAccessor(_target), _reference, tolerance_qasymm8);
 }
-FIXTURE_DATA_TEST_CASE(RunLarge, CLPoolingLayerQuantizedFixture<uint8_t>, framework::DatasetMode::NIGHTLY, combine(combine(datasets::LargeShapes(), combine(PoolingLayerDatasetQASYMM8,
-                                                                                                                   framework::dataset::make("DataType", DataType::QASYMM8))),
-                                                                                                                   pool_data_layout_dataset))
+TEST_SUITE_END() // QASYMM8
+
+TEST_SUITE(QASYMM8_SIGNED)
+FIXTURE_DATA_TEST_CASE(RunSmall, CLPoolingLayerQuantizedFixture<int8_t>, framework::DatasetMode::PRECOMMIT, combine(combine(datasets::SmallShapes(), combine(PoolingLayerDatasetQASYMM8Small,
+                                                                                                                    framework::dataset::make("DataType", DataType::QASYMM8_SIGNED))),
+                                                                                                                    pool_data_layout_dataset))
 {
     // Validate output
-    validate(CLAccessor(_target), _reference, tolerance_qasymm8);
+    validate(CLAccessor(_target), _reference, tolerance_qasymm8_s);
 }
-TEST_SUITE_END() // QASYMM8
+TEST_SUITE_END() // QASYMM8_SIGNED
 TEST_SUITE_END() // Quantized
 TEST_SUITE_END() // PoolingLayer
 TEST_SUITE_END() // CL