Horrid little hump backed caterpillars are eating my tomatoes.

No idea what to use to stop them. Have had to cut off a bunch of damaged fruit.

But yay. Fruit is ripening!

Have also discovered I'm supposed to fertilise biweekly. Luckily there was some tomato food in the shed so they just got their first food post planting.
Notes for next time:
Plant earlier! Late September perhaps.
Fertilise regularly and the plants might not be half dead.
Figure out organic control for nasty humpback caterpillars!
-- Post From Sandra's iPhone
** Ok apparantly the control for the mini beasts is digital (squish) which is no good as they can do too much damage before being found. Or Bacillus thuringiensis (or Bt) spray which is only harmful to caterpillars BUT takes 3-5 days to work, in which time they can do some serious damage :( Oh well. Needs must.