They aren't a healthy extra. Here's the syn values:
Tesco East Oats Chunky oats and barley 27g sachet - 4.5 syns
Tesco easy oats original 27g sachet - 5 syns
Tesco Easy oats Golden syrup 39g sachet - 7 syns
Tesco easy oats apple & blueberry 39g sachet - 7 syns