Finally managed to speak to head at son's new school today and feel so relieved. Have been really working myself up about it, not sleeping etc as I was worried that they might not take his allergies seriously and just think I'm some neurotic mother who thinks it's fashionable to say their child has allergies/intolerances. But the head was really great about it and suggested that I come in to the school before Sept to talk to the staff about how we manage his allergies at home and give advice about how it could be managed in school. He's also going to liaise with the school nurse and possibly the allergy nurse too. I might actually get some sleep tonight!