Am the same. I use snacks as a pick me up to get through the day. They need to have some kind of 'treat' factor. Ones I have tried are :
low fat digestive topped with low fat cheese spread. ( I use Philadelphia ). Add slice of fruit or tomato and black pepper for savory. Think cheesecake
Muller low fat deserts and yogurts : all pretty tasty, low fat and under 100 cals.
( Although the clotted cream Coop's own lemon curd yogurts are just beyond yum and not too bad for you )
peanut butter on ... a spoon
Another thing to try is the Harcomb diet. She postulates large amounts of Candida bacteria growth in the gut as a basis for sugar cravings. Doing the one week 'detox' will massively reduce your cravings and is pretty easy. The theory seems sound. Read articles in New Scientist about things like Flu releasing chemicals to make us feel more sociable and seek out other people so it can spread.
Hope some of that helps.