Just seen that Ainsley Harriot cous cous is 197 cals for the packet 1/2 packet would prob make a filling snack!
Curly Wurly (115 cal)
WW cheese puffs (about 85 cal if I'm remembering correctly)
WW slices, really like the blueberry ones.
The slices are about Kipling sized, and lots of different flavours
They have pouches of mini mint matchmakers, 12 sticks for 84 cals, and that's a great choccie treat!