gov.uk manages some of the content using Whitehall which looks like a custom CMS using Ruby on Rails https://github.com/alphagov/whitehall https://github.com/al

gov.uk manages some of the content using Whitehall which looks like a custom CMS using Ruby on Rails https://github.com/alphagov/whitehall https://github.com/alphagov/whitehall nhs.uk is built using Wagtail, a Django based CMS.