heat the oil in a paella pan (or any suitable large bottomed pan with a lid)

season and brown the chicken

remove from the pan and set aside

lightly fry the mushrooms, yellow and orange pepper and the garlic

remove from the pan and set aside

add the paella rice, the water and the saffron to the pan

while you wait for the water to boil, slice the chicken into bite sized pieces

when the water has all but boiled away add the wine, the chicken, the cooked vegetables, the seafood, oysters and tomatoes

adjust the seasoning and cover and cook over a low heat for one hour

add the peas and continue cooking over a medium heat while you cook the prawns in the butter

season the prawns and check the paella seasoning

garnish the paella with the prawns, red pepper, olives and chorizo