Slice the bacon into 2-3mm (⅛") thick strips across the bacon.
Heat the oil in a heavy-based medium-sized (24cm or 10") saucepan that you have a lid for over a high heat.
When the oil is hot, add the beef and sear on both sides until it has a deep colour (2-4 minutes on each side). Remove the beef and set it aside.
Reduce the heat to medium, add the tomato puree and anchovies and stir constantly for 1 minute.
Add the diced onion, carrot, celery and bacon and cook for 10 minutes, stirring every 3-4 minutes or so.
Turn the heat up as high as it will go, and when the vegetables start to really sizzle, pour in the red wine, add the thyme and bay leaves. Boil the wine hard until it has reduced by about half (10-12 minutes).
Add the beef stock and sun-dried tomatoes, stir to combine, and then add the beef to the pot.
Add a lid and transfer to an oven at 160°C or 320°F and cook for 3 hours.
Remove the pot from the oven, then take out the beef and place it on a chopping board. Slice the beef or ox cheek across the grain and then cut it into strips. Return it to the pot along with any juices from the beef.
Stir well and return the pot to the oven without a lid for 15-30 minutes to reduce the sauce a little before serving.