Meanwhile half fill a pot with water, add the potatoes and bring to the boil. Add a pinch of salt and continue boiling until tender, 15 to 20 minutes.
Drain the potatoes and mash them with the milk, butter and half the cheese.
Place 4 ramekins or ovenproof dishes onto a baking tray and divide the meat filling between them. Top each with a nice helping of the mashed potato. Sprinkle the remaining cheese on the top.
Bake the pies for 25 to 30 minutes, or until they are golden and bubbling.