YABU.
That Slimming World recipe sounds like some sort of cottage-bolognese hybrid.
I use BBC Good Food for my spaghetti bolognese and my cottage pie recipes.
Cottage pie:
Beef mince, onion, garlic, diced carrots, peas, flour, tomato puree, beef stock, Worcestershire sauce, bay leaves, thyme, mash.
Spaghetti bolognese:
Beef mince, onion, celery (sometimes), garlic, chopped tomatoes, tomato puree, beef stock, basil, spaghetti.
DM puts Worcestershire sauce in her bolognese and it's one of the oddest things I've tasted.