Onken fat free natural yoghurt (around 70 cals a serving) with a low calorie breakfast bar something like Special K berries is great and under 100 calories broken up and mixed with the yoghurt, try adding some fruit such as a peach cut up into chunks to make the breakfast more filling.
or
Milkroll bread (47 cals a slice) or danish bread (70 cals a slice) with one poached egg and some tomatoes, peppers and onions fried with fry light makes a great healthy and filling breakfast.