Just as long as there are no weeds in the edging, chop up the edging a bit and throw it in.

Thank you loosestrife2.Thought it'd be a shame to put in my green bin as the soil is quite wet and I'm unable to shake soil off. I want to turn it into something good for my garden!

Same thing if the soil is heavy clay. Some earthworms secluded in the roots would be icing on the cake for your compost heap.