Cut each piece of bacon into 3 or 4 pieces. Heat oil in a skillet. When oil is hot, fry bacon until crispy (the bacon will also give up flavorful fat of its own). Remove the bacon to a piece of kitchen towel.
Add the diced tomato, with all its seeded, gluey interior, into the hot oily pan, which will cause a great spitting and sizzling, and stir for a couple of minutes. Add the Worcestershire sauce and stir again, then put the bacon back into the pan, mixing it into the tomato before transferring to a plate.
Scatter with some parsley and freshly ground black pepper, and serve with bread to dip in the oily juices.