Peel and finely chop the onion. Peel, wash and slice the carrot. Clean, wash and slice spring onions and bell peppers. Heat the oil in a pan and fry the diced onion in it. Add vegetables and shrimps and fry for 3-4 minutes. Season with salt and pepper.
Wash the rice. Add rice and saffron and steam briefly. Add stock, bring to the boil and cook over low heat for 12-14 minutes. Season to taste with salt, pepper and soy sauce. Arrange on a plate and serve garnished with coriander and a slice of lemon as desired