Score the beef. Season generously with salt and pepper, drizzle with a little of the oil.
Place potato and pumpkin into a gastronorm, drizzle with remaining oil and season. Gently toss to coat. Place beef on top of vegetables. Roast in oven for 15 minutes to develop a crust.
Reduce heat to 160°C and 20% steam. Probe roast and cook to an internal temperature of 56°C for medium rare consistency.
Remove from oven, place on a board, cover loosely with foil to rest for 10 minutes.
Thinly carve beef across the grain. Serve with a selection of sides and jus.
