Preheat the oven to 160C. Sear the beef in batches on all sides to get brown caramalisation of the meet. Remove from the pan and set to one side. Add the onions to the pan and cook down, stirring all the time. When done stir in the flour and mix. Add the water, stock cubes, red wine and tomato purée. Mix and make sure everything is dissolved. Return the beef to the mix and throw in the carrots and mushrooms. To give it some extra flavour richness, add 2 tbs Worcestershire Sauce.