3. The new Red Book was issued for use by all NHS Boards from 1 January 2010 - the development checklists will therefore only be contained in the Red Book for children who have a date of birth 1 January 2010 or later.
4. The WHO Growth Charts were introduced for use for all children born on or after 1 January 2010. Children with a date of birth prior to this date should have their height and weight recorded on the UK 1990 Chart.