Add the flour to the bowl.
Dice the steak and add to the flour, making sure each piece is coated.
Peel and chop the onions, garlic, carrots and mushrooms.
In a pan melt half the butter and add the meat to the pan,
Cook until lightly browned.
Add the vegetables, thyme, ale, stock and Worcester sauce to the pan.
Bring to the boil then cover and simmer gently for an hour until the meat is soft and the sauce has thickened.
Pour the mixture into a pie dish.
Preheat the oven to 220°C/428°F/Gas Mark 7.
Beat the egg and use it to coat the edges of the pie dish so the pastry will stick.
Roll out the pastry and cover the top of the pie.
Use the rest of the egg to glaze the top of the pastry.
Bake for 20-30 minutes until the pastry is golden.