Moving from Wales to England

Hello Everyone,

My 3 year old son son has just been diagnosed with Autism. We currently live in Wales and he has an Individual Development Plan (IDP). We are thinking of moving from Wales to England to move closer to family and we were wondering if anyone here had done this and could share their experience in terms of whether our son would need to be reassessed or how easy it is to transfer any funding that he is entitled to. Thank you so much for your help in advance!