In a bowl, mix the lime zest and juice with all the other ingredients up to and including the pepper, set aside 4 tbsp of the marinade. Place the meat in the marinade, cover and leave to marinate in the fridge for approx. 4 hrs.
In a bowl, mix the tomatoes with all the other ingredients up to and including the pepper.
Salt the meat. With the lid down, grill over/on a very high heat (approx. 250°C) for approx. 2 mins. on each side. Grill the tortillas for approx. 1 min. on each side. Remove the meat from the grill, cover and leave to rest for approx. 10 mins. Carve the meat. Fill the tortillas with the meat and the salsa, drizzle with the reserved marinade. Garnish with the coriander. Serve with the lime wedges.