Step 1: 1. mix the sweetcorn, carrot (if using), cucumber, onion, lemon juice and mayonaise into the drained tuna.
Step 2: 2. add salt and pepper to taste.
Step 3: 3. spread half the tuna onto each wrap (or all of it onto the bread) and add the lettuce (if using) and peppers (if using) on top.
Step 4: 5. fold the wrap.
Step 5: 6. serve & enjoy!