systema
Slimming world
If you have a Kindle this is not a bad little book for 77p - (it was free earlier in the year) All the recipes are under 500 cals so imagine they will be fairly syn free as well
http://www.amazon.co.uk/Slow-Cooker...8&qid=1410535782&sr=1-15&keywords=slow+cooker
http://www.amazon.co.uk/Slow-Cooker...8&qid=1410535782&sr=1-15&keywords=slow+cooker