Heat the grill. Open up the flat bread until you have two rounds, and grill lightly until crisp and golden. Crumble into small shards with your hands, and set aside.
Peel the cucumbers, cut in half lengthwise, and scoop out and discard the seeds. Halve the tomatoes and scoop out the seeds and juice. Chop the cucumbers, tomatoes, sweet pepper, radishes and spring onions, and mix with the