Heat a drizzle of oil in a large deep casserole over medium high heat. Fry the chorizo for 2-3 minutes. Remove from the pan and set aside. In the same casserole fry carrot, celery and onion for 1 minute. Add the herbs, garlic, capsicum, tomatoes, paprika and chorizo. Continue to fry for a further 2-3 minutes.
Add the vegetable stock and beans. Bring to boil. Season with salt and pepper if necessary. Cover the casserole and reduce the heat to low. Simmer for 15-20 minutes or until the stew is thickened. Garnish with some extra fresh thyme.