Place pork fillet in a shallow bowl with fennel seeds. Turn to coat all over, season and set aside for 5 minutes.
Meanwhile, toss together kidney beans, green beans, parsley and goat's cheese. Drizzle with oil and season.
Preheat a lightly greased chargrill on high. Cook pork for 3-4 minutes each side, until browned and cooked through. Rest for 5 minutes before slicing. Serve with bean salad and lemon wedges.