My version of Nigella's Pink Salad - I replaced olives and feta cheese with radish and tomatoes :)
Just plate up the following:-
Mixed red and green lettuce leaves
1 Beefsteak tomato sliced
Watermelon cubes - I brought a prepared tub
3 radish sliced
8 slices cucumber halved
Sprinkle over a few chopped mint leaves
Top with a red onion that has been thinly sliced and soaked in juice of a lime