diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_2_iPad.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_2_iPad.png
index f1491738d..89802b24c 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_2_iPad.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_2_iPad.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_3_Surface_iPad_Pro.png
index 8cb862ce8..e6a730054 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_0_document_3_Surface_iPad_Pro.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_2_iPad.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_2_iPad.png
index 675283fab..a39733e2f 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_2_iPad.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_2_iPad.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_3_Surface_iPad_Pro.png
index b666cf6fd..0fc440381 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_organisational_with_white_header_and_navigation_0_document_3_Surface_iPad_Pro.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_2_iPad.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_2_iPad.png
index 0df4b88c3..27882b213 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_2_iPad.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_2_iPad.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_3_Surface_iPad_Pro.png
index bfb88ba93..635688929 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_transactional_with_service_name_0_document_3_Surface_iPad_Pro.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_0_iPhone_5_SE.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_0_iPhone_5_SE.png
index f0e01a0d0..dca720deb 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_0_iPhone_5_SE.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_0_iPhone_5_SE.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_1_iPhone_6-8.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_1_iPhone_6-8.png
index 071755153..5ef226f45 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_1_iPhone_6-8.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_1_iPhone_6-8.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_3_Surface_iPad_Pro.png
index c4361de78..bc9740d29 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_a_service_name_0_document_3_Surface_iPad_Pro.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_0_iPhone_5_SE.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_0_iPhone_5_SE.png
index 9a5bc7f36..307a5f6bd 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_0_iPhone_5_SE.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_0_iPhone_5_SE.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_1_iPhone_6-8.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_1_iPhone_6-8.png
index 5d1ec01c9..5eacc911e 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_1_iPhone_6-8.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_1_iPhone_6-8.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_3_Surface_iPad_Pro.png
index c0b42811a..92b9f2c6f 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_logo_only_0_document_3_Surface_iPad_Pro.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_0_iPhone_5_SE.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_0_iPhone_5_SE.png
index d08db65f6..b722b454c 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_0_iPhone_5_SE.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_0_iPhone_5_SE.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_1_iPhone_6-8.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_1_iPhone_6-8.png
index 582fdc905..a13032848 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_1_iPhone_6-8.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_1_iPhone_6-8.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_2_iPad.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_2_iPad.png
index 6824ffb97..91a784393 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_2_iPad.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_2_iPad.png differ
diff --git a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_3_Surface_iPad_Pro.png b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_3_Surface_iPad_Pro.png
index 9d3be2a55..3069f4bbb 100644
Binary files a/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_3_Surface_iPad_Pro.png and b/tests/backstop/bitmaps_reference/nhsuk-frontend_Header_with_search_0_document_3_Surface_iPad_Pro.png differ