Agreement: I Agree Body: Dear Editor Gardosi and colleagues rightly point out that undetected fetal growth restriction is not just an ultrasound problem. It is also a maternity safety problem.[1] The issue is not only which growth chart is used, but whether a maternity service can recognise possible placental failure early enough, respond to it, and then learn from the cases it nearly missed. One point that may need more attention is fetal growth trajectory. Size at one scan can be misleading. L