Ham & Leek Pie

I made this today for tea tonight, I know it's July and I should be making salads but I wanted some comfort food, alright!
This is very straightforward but just delicious - leave the cheese in cubes rather than melt it into the sauce, that way you get little pockets of molten cheese throughout the pie. Serve with soft mash.

Serves 4
3 eggs
large knob of butter
3 leeks, sliced
1 large garlic clove, finely grated or crushed
few sprigs of thyme
300g piece smoked ham, torn into bite-sized pieces
800ml chilled white sauce (home made or shop bought bechamel or fresh cheese sauce will do)
200g good Cheddar, diced
1 tsp Dijon mustard
100g frozen peas
small bunch chives, snipped
1/2 x 500g pack shortcrust pastry
1 beaten egg, to glaze

Simmer the eggs in boiling water for 10 minutes, then cool, shell and quarter.

Meanwhile, melt the butter in a pan and add the garlic, leek and thyme and cook for 10 minutes or so until softened.

Gently stir together the leeks, ham, sauce, cheese, mustard, peas, chives and finally the eggs. Season generously.

Preheat the oven to 190C/ Gas 5. Tip the mixture into a pie dish the roll and the pastry and use to top the filling. Brush with beaten egg and bake for 30 - 40 minutes until dark golden.