@MrsSunshine2b considering the policy is driven by anecdotal data (by their own admission), the fact that most SEND issues aren't fully apparent or recognised until a child starts school and how long referrals and assessments take , which children do you think will be the most affected?
They require a consultant letter to accept it’s a medical need(whether autism, gdd etc would fall under that it wasn't clarified) and apply the exception. Even if significant issues are apparent at 1(you have more chances living on Mars than that referral ever being made)a diagnosis by 3 is highly unlikely.
They aren't making allowances for SEND children. They are targeting them.