diff --git a/.github/workflows/ubuntu.yml b/.github/workflows/ubuntu.yml
index be6ae3dc32..e897f35cfa 100644
--- a/.github/workflows/ubuntu.yml
+++ b/.github/workflows/ubuntu.yml
@@ -17,7 +17,7 @@ jobs:
     strategy:
       fail-fast: false
       matrix:
-        name: [ "Build Bionic", "Build Focal", "Build Jammy" ]
+        name: [ "Build Bionic", "Build Focal", "Build Jammy", "Build Jammy OMP" ]
         include:
 
           - name: "Build Bionic"
@@ -29,6 +29,9 @@ jobs:
           - name: "Build Jammy"
             release: jammy
 
+          - name: "Build Jammy OMP"
+            release: jammy-omp
+
     steps:
 
       - name: Check Out Repo
diff --git a/assemble/Advection_Diffusion_CG.F90 b/assemble/Advection_Diffusion_CG.F90
index d288f8fe04..89ee5a3e53 100644
--- a/assemble/Advection_Diffusion_CG.F90
+++ b/assemble/Advection_Diffusion_CG.F90
@@ -256,6 +256,11 @@ subroutine assemble_advection_diffusion_cg(t, matrix, rhs, state, dt, velocity_n
     integer :: clr, nnid, len, ele
     integer :: num_threads, thread_num
 
+#ifdef _OPENMP
+    !! Did we successfully prepopulate the transform_to_physical_cache?
+    logical :: cache_valid
+#endif
+
     type(element_type), dimension(:), allocatable :: supg_element
 
     ewrite(1, *) "In assemble_advection_diffusion_cg"
diff --git a/assemble/Advection_Diffusion_FV.F90 b/assemble/Advection_Diffusion_FV.F90
index 3aae469be2..3dd2d1e328 100644
--- a/assemble/Advection_Diffusion_FV.F90
+++ b/assemble/Advection_Diffusion_FV.F90
@@ -171,6 +171,11 @@ subroutine assemble_advection_diffusion_fv(t, matrix, rhs, state)
     integer :: clr, nnid, len, ele
     integer :: thread_num
 
+#ifdef _OPENMP
+    !! Did we successfully prepopulate the transform_to_physical_cache?
+    logical :: cache_valid
+#endif
+
     ewrite(1,*) "In assemble_advection_diffusion_fv"
 
     coordinate => extract_vector_field(state, "Coordinate")
diff --git a/docker/actions/Dockerfile.actions.jammy-omp b/docker/actions/Dockerfile.actions.jammy-omp
new file mode 100644
index 0000000000..6a50b5e084
--- /dev/null
+++ b/docker/actions/Dockerfile.actions.jammy-omp
@@ -0,0 +1,27 @@
+FROM fluidity/baseimages:jammy
+
+USER root
+
+RUN apt-get -y update && \
+      apt-get -y dist-upgrade && \
+      apt-get -y install sudo && \
+      rm -rf /var/cache/apt/archives && \
+      rm -rf /var/lib/apt/lists
+
+RUN adduser fluidity sudo
+RUN echo '%sudo ALL=(ALL) NOPASSWD:ALL' >> /etc/sudoers
+
+COPY . /home/fluidity
+RUN chown -R fluidity /home/fluidity
+
+USER fluidity
+
+RUN ./configure --enable-2d-adaptivity --enable-omp
+RUN make makefiles
+RUN test -z "$(git status --porcelain */Makefile.dependencies)"
+RUN make
+RUN make fltools
+RUN make manual
+
+# Python module 'assess' is required for some longtests
+RUN python3 -m pip install assess
diff --git a/femtools/Colouring.F90 b/femtools/Colouring.F90
index b4038034b9..14ee77e966 100644
--- a/femtools/Colouring.F90
+++ b/femtools/Colouring.F90
@@ -89,6 +89,13 @@ subroutine get_mesh_colouring(state, mesh, colouring_type, colouring)
     type(integer_set), dimension(:), pointer, intent(out) :: colouring
     type(mesh_type), pointer :: topology
     integer :: i
+#ifdef _OPENMP
+    type(csr_sparsity), pointer :: sparsity
+    type(mesh_type) :: p0_mesh
+    integer :: ncolours
+    integer :: stat
+    type(scalar_field) :: element_colours
+#endif
 
     topology => extract_mesh(state, topology_mesh_name)