Looks like a result there skeeter, but really, forget beef - short and hot in an oven for beef.
Get yourself a shoulder of lamb on the bone and cook that for 8-9 hours or overnight as you have done above and never look back...
Here you go:
Let the lamb shoulder come to room temperate. Sprinkle the lamb shoulder with salt and pepper. Get a frying pan and sear the lamb shoulder all over. Take it out and put it on a plate.
Course chop an onion, a couple of celery sticks and some carrots and chuck them in the frying pan after about 3 minutes add a generous glass of red wine and cook for about a minute scraping up the stuck on burnt stuff till the pan is clean and the vapour does not smell of alcohol. Throw the whole lot into the slow cooker.
Add a sprig of rosemary and a couple of bay leaves. Put the lamb shoulder on top. Top up the slow cooker with chicken stock until the liquid is just touching the bottom of the lamb. Put it on low and cook it for ages (9 hours ish - even 12 hours).
Take the lamb out and put it on a plate and cover it with tin foil. Put the sauce through a sieve and discard the vegetables. Put the sauce in a pan and let it rest until the fat rises to the top. Lay a few sheets of kitchen roll on the sauce and suck up most of the fat.
Put the sauce on a simmer (don't boil too hard or it may split), reduce by half, taste, season. If it is too thin, mix a teaspoon of cornflour with a little water and chuck that in bit by bit to thicken it up.
Meanwhile, put your oven on as hot as it goes, put the lamb on a baking tray and drizzle a little of the sauce on top. Put the lamb in for about 10-15 minutes till it goes crispy on the edges then take it out, loosely cover with foil and rest it for 10-20 minutes. Cook your chosen veg while you are doing it.
Yum-chuffing-yum-yum.
Alternatively shred the lamb, mix with some of the the sauce and serve with heated pitta breads, salad and humous.
Next step is to start adding cumin, cinnamon, chili, chopped tomatoes and borlotti beans to the above for a Moroccan twist... even more yum yum!