Little Orange Bugs

When I was inspecting our failing broad bean crop I came across these little bugs.

I apologise for the quality of the photo. We left our camera at Garden Cousin's house a couple of weekends ago so I have been borrowing Garden Girl's camera, with which I am less familiar. These little bugs are actually quite a bright orange, with a row of close black spots down the middle of their back. They are all over our broad beans but, as you can see from the photo, they have also moved on to our peas. I hope that they are there to eat the blackfly but I am worried they may be there to eat our vegetables.

Does anyone know what they are?