Slow cooker Beef and tomato stew

Slow cooker Beef and tomato stew.. 5 hours high, 8 low

stewing beef cubes (or Aberdeen angus if you got lucky in the coop..) about 500g
6 big spuds peeled cut in big lumps
1 swede in medium lumps
1-2 onions sliced
can of chopped toms
1 teaspoon garlic
1 teaspoon dry rosemary
1 beef stock cube (not entirely sure this was needed, I just hoyed it in)
1 heaped dessertspoon plain flour mixed to paste with cold water
1 tablespoon Worcestershire sauce
salt/pepper ( about 1 teaspoon salt and a lot of pepper)
about 1/2-3/4 pint hot water.. good stir..