"header" examples

• example-header-default
• example-header-external-for-survey-with-description
• example-header-external-for-surveys
• example-header-external-welsh
• example-header-external-with-navigation-and-search
• example-header-external-with-navigation
• example-header-external-with-service-links
• example-header-external-with-sub-navigation-removed
• example-header-external-with-sub-navigation
• example-header-internal
• example-header-multiple-logos
• example-header-neutral-for-multicoloured-logo