Homemade Macaroni and Cheese

I've adapted this cheesy recipe from one given to me on my 14th birthday. It is creamy and cheesy, sure to be a hit with the family.

 1/2 lb. macaroni, cooked. (we currently like small shells)
4 T flour
3/4 tsp salt
1/2-3/4 lb shredded cheddar cheese
2 tsp worcestershire
4 T butter
3 cups milk
1/4 tsp fresh ground pepper

*Cook pasta. Melt butter in a pot, stir in flour, salt and pepper. Slowly add milk, stirring until it thickens. Add cheese, stir until melted and blended well. Add worcestershire sauce. Pour over pasta, mix together and serve. A few strips of bacon makes a nice addition. Fry and drain before adding to macaroni. Makes enough for 2 (and a half, lol) people with enough leftovers for another meal.