Chargrilled rare sirloin of beef

Method

1. Remove the beef from the fridge 30 minutes before cooking to allow it to come up to room temperature. Preheat the oven to 200°C/fan180°C/gas 6 and light/preheat the barbecue (or heat a large griddle pan over a medium-high heat).
2. Brush the beef with oil, then season well with sea salt and freshly ground black pepper. Sear the beef over a medium-high heat on the barbecue or griddle for 10 minutes, turning now and then until really well coloured all over (allow about 2-3 minutes each side). Transfer the beef to a roasting tin and roast in the oven for 40-50 minutes for rare,1 hour-1 hour 10 minutes for medium, or until done to your liking.
3. Transfer the beef to a chopping board, then leave to rest and cool to room temperature. Thinly slice and serve.