Lamb and Pork Cannelloni

Name: Lamb and Pork Cannelloni
Ingredients: 1 tbsp. sunflower oil; 400 g (14oz) each pork and lamb mince; 1 medium onion, thinly sliced; 1 medium carrot, finely diced; 2 garlic cloves, crushed; Large pinch each of chilli flakes and mace; ¼ tsp sweet smoked paprika; 2 x 400 g tins chopped tomatoes; 110 g tin kidney beans, drained and rinsed; 50 g (2oz) butter; 50 g (2oz) flour; 350 mL (12fl oz) milk; 350 mL (12fl oz) lamb stock; 2 large handfuls spinach; 8 fresh egg lasagne pasta sheets; 75 g (3oz) feta cheese