Mix all of the marinade ingredients together in a bowl and mix well
Add the pork to the marinade, make sure it is well covered and marinate for at least 30 minutes, 1 hour is better
Pre-heat the oven to 180℃ fan, 200℃, gas mark 6. In a frying pan that can be put in the oven, add a splash of olive oil and fry the pork fillet over a high heat to seal on all sides (about 1 minute per side). Once browned, transfer to the oven for 8-10 minutes until cooked through
Once cooked, leave the pork to rest for 5 minutes whilst you prepare a simple salad to go with it and then carve. Serve with the salad and enjoy!