Grinity
Your story is like ours with DS10 in many ways.

Cricket3 - a great suggestion. After our experiences it was amazing how many parents came forward and said they had had issues with our son's bully. It gave the lie to the old chestnut that it was only our son and therefore he was (partially) to blame. I wish I had known before all the upset that others had had problems too. maybe you could approach the school 'mob handed' else they'll close ranks and your child will be "the problem" - trust me.