Allowing for differences in taste I have to say that a good cut of beef should be seared before roasting. It provides the caramelized surface that does improve the flavor of even cheaper cuts.
We raise beef cattle here in the western U.S. and consider ourselves experienced in the art of cooking beef and always sear the cut.... In a heavy, preferably black cast iron skillet, add a little, maybe two or three tablepoons of any good oil, such as peanut, or safflower oil... (we use olive oil, but it does have a somewhat lower smoke point) to the pan and bring the oil to a temperature where a few drops of water "skitter" across the bottom of the pan. Add the beef, and sear on each side about 3 to 4 minutes or until a nice brown crust has formed. Always turn with tongs, never with a fork!
The add meat to your roasting pan and roast, initially, at 400 degrees F (sorry, we're in the U.S. you do the conversion) for 30 minutes... lower the temperature to 300 degrees and roast until the interior temperature (with a good meat thermometer) reaches about 135 degrees for rare to medium rare. Remove, place a tent of aluminim foil over the cut and let it rest for 30 minutes. Slice and serve.
A word about final temperature... during the resting period the cut will continue to increase in temp... the final temp should be be near 140 degrees F for medium rare...
As mentioned, I would add a coarse salt (I use canning or Kosher) and fresh fround pepper... maybe a few sprigs of fresh Rosemary... nothing else. Serve with freshly ground Horse radish on the side, if available... never use the goop mixed with other things like mayo... ewwww!
Enjoy!