Ingredients:
* 283 g/10 oz tuna chunks canned in brine, drained (15 Sins on Green)
* 1 large red onion, very thinly sliced
* 1 red pepper, deseeded and thinly sliced into rings
* 1 x 397-g/14-oz can butter beans or haricot beans, drained (21 Sins on Original)
* 4 tablespoons fat free vinaigrette dressing
* 3 tablespoons finery chopped flat-leaf parsley
* salt and ground black pepper
* salad leaves, e.g. lamb's lettuce, rocket, fresh herbs and watercress
* 8 red or yellow cherry tomatoes, halved