Heat 1 tablespoon oil in a large saucepan over high heat. Cook beef, in 4 batches, stirring, until browned. Transfer to a plate.
Reduce heat to medium. Add remaining oil, onions, leeks, garlic, celery and carrots to pan. Cook, stirring often, for 5 minutes.
Return beef to pan with tomatoes, wine and stock. Bring to the boil. Reduce heat to low and simmer, covered, for 1 hour. Uncover and simmer gently, stirring occasionally, for 30 minutes or until beef is tender.
Divide half the casserole between 4 plates. Serve with mashed potato or bread, sprinkled with parsley leaves. Set aside remaining casserole for High Pie (see notes).
