Their internal guidelines on ease-of-reading is to target a reading age of 9. There's a blog that mentions it here: https://gds.blog.gov.uk/2016/02/23/writing-

Their internal guidelines on ease-of-reading is to target a reading age of 9. There's a blog that mentions it here: https://gds.blog.gov.uk/2016/02/23/writing-content-for-everyone/ https://gds.blog.gov.uk/2016/02/23/writing-content-for-every... I don't remember exactly where this is published formally, but I've come across it before.