In a large frypan, brown the beef over a high heat for a couple of minutes.
Preheat the slow cooker for 20 minutes on HIGH.
Layer carrots, potatoes and onions in the bottom of the slow cooker's ceramic bowl. Then top with beef, bay leaf, and black peppercorns.
In a large mixing bowl, combine the stock, tomatoes, and thyme. Pour over the meat and vegetables.
Place the lid on the slow cooker and cook for 3-4 hours on HIGH or 7-8 hours on LOW.
Stir in the peas 15 to 20 minutes before serving and cook on HIGH.
Taste and adjust seasoning, stir in the parsley and remove bay leaf before serving.