diff --git a/.cirrus.yml b/.cirrus.yml
index c96b5a5281..b3992de64a 100644
--- a/.cirrus.yml
+++ b/.cirrus.yml
@@ -38,7 +38,7 @@ env:
   # Conda packages to be installed.
   CONDA_CACHE_PACKAGES: "nox pip"
   # Git commit hash for iris test data.
-  IRIS_TEST_DATA_VERSION: "2.4"
+  IRIS_TEST_DATA_VERSION: "2.5"
   # Base directory for the iris-test-data.
   IRIS_TEST_DATA_DIR: ${HOME}/iris-test-data
 
diff --git a/.github/workflows/benchmark.yml b/.github/workflows/benchmark.yml
index 167b909ddd..3da15bb4bf 100644
--- a/.github/workflows/benchmark.yml
+++ b/.github/workflows/benchmark.yml
@@ -10,6 +10,13 @@ jobs:
   benchmark:
     runs-on: ubuntu-latest
 
+    env:
+      IRIS_TEST_DATA_LOC_PATH: benchmarks
+      IRIS_TEST_DATA_PATH: benchmarks/iris-test-data
+      IRIS_TEST_DATA_VERSION: "2.5"
+      # Lets us manually bump the cache to rebuild
+      TEST_DATA_CACHE_BUILD: "2"
+
     steps:
       # Checks-out your repository under $GITHUB_WORKSPACE, so your job can access it
       - uses: actions/checkout@v2
@@ -38,9 +45,31 @@ jobs:
           key: ${{ runner.os }}-${{ github.sha }}
           restore-keys: ${{ runner.os }}
 
+      - name: Cache test data directory
+        id: cache-test-data
+        uses: actions/cache@v2
+        with:
+          path: |
+            ${{ env.IRIS_TEST_DATA_PATH }}
+          key:
+            test-data-${{ env.IRIS_TEST_DATA_VERSION }}-${{ env.TEST_DATA_CACHE_BUILD }}
+
+      - name: Fetch the test data
+        if: steps.cache-test-data.outputs.cache-hit != 'true'
+        run: |
+          wget --quiet https://github.com/SciTools/iris-test-data/archive/v${IRIS_TEST_DATA_VERSION}.zip -O iris-test-data.zip
+          unzip -q iris-test-data.zip
+          mkdir --parents ${GITHUB_WORKSPACE}/${IRIS_TEST_DATA_LOC_PATH}
+          mv iris-test-data-${IRIS_TEST_DATA_VERSION} ${GITHUB_WORKSPACE}/${IRIS_TEST_DATA_PATH}
+          
+      - name: Set test data var
+        run: |
+          echo "OVERRIDE_TEST_DATA_REPOSITORY=${GITHUB_WORKSPACE}/${IRIS_TEST_DATA_PATH}/test_data" >> $GITHUB_ENV
+
       - name: Run CI benchmarks
         run: |
           mkdir --parents benchmarks/.asv
+          set -o pipefail
           nox --session="benchmarks(ci compare)" | tee benchmarks/.asv/ci_compare.txt
 
       - name: Archive asv results
diff --git a/.pre-commit-config.yaml b/.pre-commit-config.yaml
index 0fc9264cdc..82cb6412a2 100644
--- a/.pre-commit-config.yaml
+++ b/.pre-commit-config.yaml
@@ -6,7 +6,8 @@ files: |
         noxfile\.py|
         setup\.py|
         docs\/.+\.py|
-        lib\/.+\.py
+        lib\/.+\.py|
+        benchmarks\/.+\.py
     )
 minimum_pre_commit_version: 1.21.0
 
diff --git a/benchmarks/benchmarks/metadata_manager_factory.py b/benchmarks/benchmarks/metadata_manager_factory.py
index c7cad96f4c..7e7fc98008 100644
--- a/benchmarks/benchmarks/metadata_manager_factory.py
+++ b/benchmarks/benchmarks/metadata_manager_factory.py
@@ -9,13 +9,13 @@
 """
 
 from iris.common import (
-    metadata_manager_factory,
     AncillaryVariableMetadata,
     BaseMetadata,
     CellMeasureMetadata,
     CoordMetadata,
     CubeMetadata,
     DimCoordMetadata,
+    metadata_manager_factory,
 )
 
 
diff --git a/benchmarks/benchmarks/mixin.py b/benchmarks/benchmarks/mixin.py
index 97366bcc9a..e78b150438 100644
--- a/benchmarks/benchmarks/mixin.py
+++ b/benchmarks/benchmarks/mixin.py
@@ -14,7 +14,6 @@
 from iris import coords
 from iris.common.metadata import AncillaryVariableMetadata
 
-
 LONG_NAME = "air temperature"
 STANDARD_NAME = "air_temperature"
 VAR_NAME = "air_temp"
diff --git a/benchmarks/benchmarks/regridding.py b/benchmarks/benchmarks/regridding.py
new file mode 100644
index 0000000000..6db33aa192
--- /dev/null
+++ b/benchmarks/benchmarks/regridding.py
@@ -0,0 +1,40 @@
+# Copyright Iris contributors
+#
+# This file is part of Iris and is released under the LGPL license.
+# See COPYING and COPYING.LESSER in the root of the repository for full
+# licensing details.
+"""
+Regridding benchmark test
+
+"""
+
+# import iris tests first so that some things can be initialised before
+# importing anything else
+from iris import tests  # isort:skip
+
+import iris
+from iris.analysis import AreaWeighted
+
+
+class HorizontalChunkedRegridding:
+    def setup(self) -> None:
+        # Prepare a cube and a template
+
+        cube_file_path = tests.get_data_path(
+            ["NetCDF", "regrid", "regrid_xyt.nc"]
+        )
+        self.cube = iris.load_cube(cube_file_path)
+
+        template_file_path = tests.get_data_path(
+            ["NetCDF", "regrid", "regrid_template_global_latlon.nc"]
+        )
+        self.template_cube = iris.load_cube(template_file_path)
+
+        # Chunked data makes the regridder run repeatedly
+        self.cube.data = self.cube.lazy_data().rechunk((1, -1, -1))
+
+    def time_regrid_area_w(self) -> None:
+        # Regrid the cube onto the template.
+        out = self.cube.regrid(self.template_cube, AreaWeighted())
+        # Realise the data
+        out.data
diff --git a/benchmarks/nox_asv_plugin.py b/benchmarks/nox_asv_plugin.py
index 228a5dc668..6c9ce14272 100644
--- a/benchmarks/nox_asv_plugin.py
+++ b/benchmarks/nox_asv_plugin.py
@@ -13,12 +13,12 @@
 from shutil import copy2, copytree
 from tempfile import TemporaryDirectory
 
+from asv import util as asv_util
 from asv.config import Config
 from asv.console import log
 from asv.environment import get_env_name
 from asv.plugins.conda import Conda, _find_conda
-from asv.repo import get_repo, Repo
-from asv import util as asv_util
+from asv.repo import Repo, get_repo
 
 
 class NoxConda(Conda):