Prawns: prepare the prawns by twisting and removing the heads, pulling the tails off and removing the shell. Then use a knife along the backbone to slice it open and remove the digestive tract.
Cook prawns: place a large saute pan on the stove top, turn the heat to high and add the olive oil, garlic and prawns. Cook the prawns for 3-4 minutes, rotating sides. They will turn bright orange with white, non transparent flesh. Once the prawns are cooked, use a slotted spoon to lift them up and out of the pan and place them into a paper towel lined chopping board.
Pasta sauce: without rinsing or cleaning the pan that you used to cook the prawns, turn the heat to medium low and then add the crushed tomatoes, tomato paste, Worcestershire sauce and Italian seasoning. Then stir to combine.
Tagliatelle: read and follow the package directions to cook the pasta in a medium saucepan of boiling salted water. Moments before it is al dente (a little bit chewy) use a heatproof jug to scoop out 1 -2 cups of the pasta water. Then use a colander over the sink to drain the rest of the water and discard.
Combine: add the hot pasta to the tomato sauce and then add ½ cup (125 ml) of the reserved pasta water to the pan and use a pair of tongs to toss and combine. Note 9
Parsley: next add the chopped parsley to the pan and use tongs to toss to combine.
Cooked prawns: then add the cooked prawns to the pasta and gently stir to fold them into the dish.
Garnish: when the pasta and prawns have heated through generously garnish the dish with freshly grated parmesan cheese, black pepper, additional chopped parsley and lemon wedges. Provide bowls, forks and spoons then portion and serve.