In a paella pan, heat the olive oil and fry the chicken pieces for 1-2 minutes.
Add the prawns, then stir; add the mussels and stir again, then add the garlic and tomatoes. Fry for a couple more minutes.
Sprinkle in the rice. NOTE: Do not stir the ingredients, just shake them.
Add a good pinch of saffron, and pour on up to 1 litre/1¾ pints of boiling chicken stock (about 1cm/½in above the level of the rice).
Finally add the small cherry tomatoes and broad beans and season and simmer for 20 minutes.
Serve with a rocket salad and crusty bread.