Dice the red onion, chilli, garlic, spring onion, root ginger and cherry tomatoes finely. Slice the green pepper into batons.
Heat two saucepans with olive or rapeseed oil.
Add the red onion, garlic, chilli, root ginger and green pepper to one saucepan and sauté gently until soft.
Add the prawns and spring onion to the other saucepan and fry the prawns until they are fully cooked through.
Add the prawns (including any cooking juices) and the spring onions to the saucepan with the garlic mixture, and then simmer gently for 5 minutes.
Add the diced cherry tomatoes to the same saucepan and then add the soy sauce and Thai fish sauce. Add the dried Italian mixed herbs and simmer on a low to medium heat for a further 15 minutes, and also cook your pasta of choice at the same time.
Add the cooked pasta into the saucepan and stir it through. Garnish with finely chopped fresh basil and then serve.